diff --git a/advanced/01-pihole.conf b/advanced/01-pihole.conf
index 5919034d..2c8b3749 100644
--- a/advanced/01-pihole.conf
+++ b/advanced/01-pihole.conf
@@ -18,8 +18,6 @@
 #                    WITHIN /etc/dnsmasq.d/yourname.conf                      #
 ###############################################################################
 
-addn-hosts=/etc/pihole/gravity.list
-addn-hosts=/etc/pihole/black.list
 addn-hosts=/etc/pihole/local.list
 addn-hosts=/etc/pihole/custom.list
 
diff --git a/advanced/Scripts/database_migration/gravity-db.sh b/advanced/Scripts/database_migration/gravity-db.sh
new file mode 100644
index 00000000..0fe90d8a
--- /dev/null
+++ b/advanced/Scripts/database_migration/gravity-db.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC1090
+
+# Pi-hole: A black hole for Internet advertisements
+# (c) 2019 Pi-hole, LLC (https://pi-hole.net)
+# Network-wide ad blocking via your own hardware.
+#
+# Updates gravity.db database
+#
+# This file is copyright under the latest version of the EUPL.
+# Please see LICENSE file for your rights under this license.
+
+upgrade_gravityDB(){
+	local database piholeDir auditFile version
+	database="${1}"
+	piholeDir="${2}"
+	auditFile="${piholeDir}/auditlog.list"
+
+	# Get database version
+	version="$(sqlite3 "${database}" "SELECT \"value\" FROM \"info\" WHERE \"property\" = 'version';")"
+
+	if [[ "$version" == "1" ]]; then
+		# This migration script upgrades the gravity.db file by
+		# adding the domain_audit table
+		echo -e "  ${INFO} Upgrading gravity database from version 1 to 2"
+		sqlite3 "${database}" < "/etc/.pihole/advanced/Scripts/database_migration/gravity/1_to_2.sql"
+		version=2
+
+		# Store audit domains in database table
+		if [ -e "${auditFile}" ]; then
+			echo -e "  ${INFO} Migrating content of ${auditFile} into new database"
+			# database_table_from_file is defined in gravity.sh
+			database_table_from_file "domain_audit" "${auditFile}"
+		fi
+	fi
+	if [[ "$version" == "2" ]]; then
+		# This migration script upgrades the gravity.db file by
+		# renaming the regex table to regex_blacklist, and
+		# creating a new regex_whitelist table + corresponding linking table and views
+		echo -e "  ${INFO} Upgrading gravity database from version 2 to 3"
+		sqlite3 "${database}" < "/etc/.pihole/advanced/Scripts/database_migration/gravity/2_to_3.sql"
+		version=3
+	fi
+}
diff --git a/advanced/Scripts/database_migration/gravity/1_to_2.sql b/advanced/Scripts/database_migration/gravity/1_to_2.sql
new file mode 100644
index 00000000..6d57a6fe
--- /dev/null
+++ b/advanced/Scripts/database_migration/gravity/1_to_2.sql
@@ -0,0 +1,14 @@
+.timeout 30000
+
+BEGIN TRANSACTION;
+
+CREATE TABLE domain_audit
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	domain TEXT UNIQUE NOT NULL,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int))
+);
+
+UPDATE info SET value = 2 WHERE property = 'version';
+
+COMMIT;
diff --git a/advanced/Scripts/database_migration/gravity/2_to_3.sql b/advanced/Scripts/database_migration/gravity/2_to_3.sql
new file mode 100644
index 00000000..fd7c24d2
--- /dev/null
+++ b/advanced/Scripts/database_migration/gravity/2_to_3.sql
@@ -0,0 +1,65 @@
+.timeout 30000
+
+PRAGMA FOREIGN_KEYS=OFF;
+
+BEGIN TRANSACTION;
+
+ALTER TABLE regex RENAME TO regex_blacklist;
+
+CREATE TABLE regex_blacklist_by_group
+(
+	regex_blacklist_id INTEGER NOT NULL REFERENCES regex_blacklist (id),
+	group_id INTEGER NOT NULL REFERENCES "group" (id),
+	PRIMARY KEY (regex_blacklist_id, group_id)
+);
+
+INSERT INTO regex_blacklist_by_group SELECT * FROM regex_by_group;
+DROP TABLE regex_by_group;
+DROP VIEW vw_regex;
+DROP TRIGGER tr_regex_update;
+
+CREATE VIEW vw_regex_blacklist AS SELECT DISTINCT domain
+    FROM regex_blacklist
+    LEFT JOIN regex_blacklist_by_group ON regex_blacklist_by_group.regex_blacklist_id = regex_blacklist.id
+    LEFT JOIN "group" ON "group".id = regex_blacklist_by_group.group_id
+    WHERE regex_blacklist.enabled = 1 AND (regex_blacklist_by_group.group_id IS NULL OR "group".enabled = 1)
+    ORDER BY regex_blacklist.id;
+
+CREATE TRIGGER tr_regex_blacklist_update AFTER UPDATE ON regex_blacklist
+    BEGIN
+      UPDATE regex_blacklist SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE domain = NEW.domain;
+    END;
+
+CREATE TABLE regex_whitelist
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	domain TEXT UNIQUE NOT NULL,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	date_modified INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	comment TEXT
+);
+
+CREATE TABLE regex_whitelist_by_group
+(
+	regex_whitelist_id INTEGER NOT NULL REFERENCES regex_whitelist (id),
+	group_id INTEGER NOT NULL REFERENCES "group" (id),
+	PRIMARY KEY (regex_whitelist_id, group_id)
+);
+
+CREATE VIEW vw_regex_whitelist AS SELECT DISTINCT domain
+    FROM regex_whitelist
+    LEFT JOIN regex_whitelist_by_group ON regex_whitelist_by_group.regex_whitelist_id = regex_whitelist.id
+    LEFT JOIN "group" ON "group".id = regex_whitelist_by_group.group_id
+    WHERE regex_whitelist.enabled = 1 AND (regex_whitelist_by_group.group_id IS NULL OR "group".enabled = 1)
+    ORDER BY regex_whitelist.id;
+
+CREATE TRIGGER tr_regex_whitelist_update AFTER UPDATE ON regex_whitelist
+    BEGIN
+      UPDATE regex_whitelist SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE domain = NEW.domain;
+    END;
+
+
+UPDATE info SET value = 3 WHERE property = 'version';
+
+COMMIT;
diff --git a/advanced/Scripts/list.sh b/advanced/Scripts/list.sh
index c1d95aae..6a606665 100755
--- a/advanced/Scripts/list.sh
+++ b/advanced/Scripts/list.sh
@@ -11,46 +11,51 @@
 # Globals
 basename=pihole
 piholeDir=/etc/"${basename}"
-whitelist="${piholeDir}"/whitelist.txt
-blacklist="${piholeDir}"/blacklist.txt
+gravityDBfile="${piholeDir}/gravity.db"
 
-readonly regexlist="/etc/pihole/regex.list"
 reload=false
 addmode=true
 verbose=true
 wildcard=false
+web=false
 
 domList=()
 
-listMain=""
-listAlt=""
+listType=""
+listname=""
 
 colfile="/opt/pihole/COL_TABLE"
 source ${colfile}
 
 
 helpFunc() {
-    if [[ "${listMain}" == "${whitelist}" ]]; then
+    if [[ "${listType}" == "whitelist" ]]; then
         param="w"
-        type="white"
-    elif [[ "${listMain}" == "${regexlist}" && "${wildcard}" == true ]]; then
+        type="whitelist"
+    elif [[ "${listType}" == "regex_blacklist" && "${wildcard}" == true ]]; then
         param="-wild"
-        type="wildcard black"
-    elif [[ "${listMain}" == "${regexlist}" ]]; then
+        type="wildcard blacklist"
+    elif [[ "${listType}" == "regex_blacklist" ]]; then
         param="-regex"
-        type="regex black"
+        type="regex blacklist filter"
+    elif [[ "${listType}" == "regex_whitelist" && "${wildcard}" == true ]]; then
+        param="-white-wild"
+        type="wildcard whitelist"
+    elif [[ "${listType}" == "regex_whitelist" ]]; then
+        param="-white-regex"
+        type="regex whitelist filter"
     else
         param="b"
-        type="black"
+        type="blacklist"
     fi
 
     echo "Usage: pihole -${param} [options] <domain> <domain2 ...>
 Example: 'pihole -${param} site.com', or 'pihole -${param} site1.com site2.com'
-${type^}list one or more domains
+${type^} one or more domains
 
 Options:
-  -d, --delmode       Remove domain(s) from the ${type}list
-  -nr, --noreload     Update ${type}list without refreshing dnsmasq
+  -d, --delmode       Remove domain(s) from the ${type}
+  -nr, --noreload     Update ${type} without reloading the DNS server
   -q, --quiet         Make output less verbose
   -h, --help          Show this help dialog
   -l, --list          Display all your ${type}listed domains
@@ -73,7 +78,7 @@ HandleOther() {
 
     # Check validity of domain (don't check for regex entries)
     if [[ "${#domain}" -le 253 ]]; then
-        if [[ "${listMain}" == "${regexlist}" && "${wildcard}" == false ]]; then
+        if [[ ( "${listType}" == "regex_blacklist" || "${listType}" == "regex_whitelist" ) && "${wildcard}" == false ]]; then
             validDomain="${domain}"
         else
             validDomain=$(grep -P "^((-|_)*[a-z\\d]((-|_)*[a-z\\d])*(-|_)*)(\\.(-|_)*([a-z\\d]((-|_)*[a-z\\d])*))*$" <<< "${domain}") # Valid chars check
@@ -88,175 +93,152 @@ HandleOther() {
     fi
 }
 
-PoplistFile() {
-    # Check whitelist file exists, and if not, create it
-    if [[ ! -f "${whitelist}" ]]; then
-        touch "${whitelist}"
-    fi
-
-    # Check blacklist file exists, and if not, create it
-    if [[ ! -f "${blacklist}" ]]; then
-        touch "${blacklist}"
+ProcessDomainList() {
+    local is_regexlist
+    if [[ "${listType}" == "regex_blacklist" ]]; then
+        # Regex black filter list
+        listname="regex blacklist filters"
+        is_regexlist=true
+    elif [[ "${listType}" == "regex_whitelist" ]]; then
+        # Regex white filter list
+        listname="regex whitelist filters"
+        is_regexlist=true
+    else
+        # Whitelist / Blacklist
+        listname="${listType}"
+        is_regexlist=false
     fi
 
     for dom in "${domList[@]}"; do
-        # Logic: If addmode then add to desired list and remove from the other; if delmode then remove from desired list but do not add to the other
+        # Format domain into regex filter if requested
+        if [[ "${wildcard}" == true ]]; then
+            dom="(^|\\.)${dom//\./\\.}$"
+        fi
+
+        # Logic: If addmode then add to desired list and remove from the other;
+        # if delmode then remove from desired list but do not add to the other
         if ${addmode}; then
-            AddDomain "${dom}" "${listMain}"
-            RemoveDomain "${dom}" "${listAlt}"
+            AddDomain "${dom}" "${listType}"
+            if ! ${is_regexlist}; then
+                RemoveDomain "${dom}" "${listAlt}"
+            fi
         else
-            RemoveDomain "${dom}" "${listMain}"
+            RemoveDomain "${dom}" "${listType}"
         fi
   done
 }
 
 AddDomain() {
+    local domain list num
+    # Use printf to escape domain. %q prints the argument in a form that can be reused as shell input
+    domain="$1"
     list="$2"
-    domain=$(EscapeRegexp "$1")
-
-    [[ "${list}" == "${whitelist}" ]] && listname="whitelist"
-    [[ "${list}" == "${blacklist}" ]] && listname="blacklist"
-
-    if [[ "${list}" == "${whitelist}" || "${list}" == "${blacklist}" ]]; then
-        [[ "${list}" == "${whitelist}" && -z "${type}" ]] && type="--whitelist-only"
-        [[ "${list}" == "${blacklist}" && -z "${type}" ]] && type="--blacklist-only"
-        bool=true
-        # Is the domain in the list we want to add it to?
-        grep -Ex -q "${domain}" "${list}" > /dev/null 2>&1 || bool=false
-
-        if [[ "${bool}" == false ]]; then
-            # Domain not found in the whitelist file, add it!
-            if [[ "${verbose}" == true ]]; then
-                echo -e "  ${INFO} Adding ${1} to ${listname}..."
-            fi
-            reload=true
-            # Add it to the list we want to add it to
-            echo "$1" >> "${list}"
-        else
-            if [[ "${verbose}" == true ]]; then
-                echo -e "  ${INFO} ${1} already exists in ${listname}, no need to add!"
-            fi
-        fi
-    elif [[ "${list}" == "${regexlist}" ]]; then
-        [[ -z "${type}" ]] && type="--wildcard-only"
-        bool=true
-        domain="${1}"
 
-        [[ "${wildcard}" == true ]] && domain="(^|\\.)${domain//\./\\.}$"
+    # Is the domain in the list we want to add it to?
+    num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM ${list} WHERE domain = '${domain}';")"
 
-        # Is the domain in the list?
-        # Search only for exactly matching lines
-        grep -Fx "${domain}" "${regexlist}" > /dev/null 2>&1 || bool=false
+    if [[ "${num}" -ne 0 ]]; then
+      if [[ "${verbose}" == true ]]; then
+          echo -e "  ${INFO} ${1} already exists in ${listname}, no need to add!"
+      fi
+      return
+    fi
 
-        if [[ "${bool}" == false ]]; then
-            if [[ "${verbose}" == true ]]; then
-                echo -e "  ${INFO} Adding ${domain} to regex list..."
-            fi
-            reload="restart"
-            echo "$domain" >> "${regexlist}"
-        else
-            if [[ "${verbose}" == true ]]; then
-                echo -e "  ${INFO} ${domain} already exists in regex list, no need to add!"
-            fi
-        fi
+    # Domain not found in the table, add it!
+    if [[ "${verbose}" == true ]]; then
+        echo -e "  ${INFO} Adding ${1} to the ${listname}..."
     fi
+    reload=true
+    # Insert only the domain here. The enabled and date_added fields will be filled
+    # with their default values (enabled = true, date_added = current timestamp)
+    sqlite3 "${gravityDBfile}" "INSERT INTO ${list} (domain) VALUES ('${domain}');"
 }
 
 RemoveDomain() {
+    local domain list num
+    # Use printf to escape domain. %q prints the argument in a form that can be reused as shell input
+    domain="$1"
     list="$2"
-    domain=$(EscapeRegexp "$1")
-
-    [[ "${list}" == "${whitelist}" ]] && listname="whitelist"
-    [[ "${list}" == "${blacklist}" ]] && listname="blacklist"
-
-    if [[ "${list}" == "${whitelist}" || "${list}" == "${blacklist}" ]]; then
-        bool=true
-        [[ "${list}" == "${whitelist}" && -z "${type}" ]] && type="--whitelist-only"
-        [[ "${list}" == "${blacklist}" && -z "${type}" ]] && type="--blacklist-only"
-        # Is it in the list? Logic follows that if its whitelisted it should not be blacklisted and vice versa
-        grep -Ex -q "${domain}" "${list}" > /dev/null 2>&1 || bool=false
-        if [[ "${bool}" == true ]]; then
-            # Remove it from the other one
-            echo -e "  ${INFO} Removing $1 from ${listname}..."
-            # /I flag: search case-insensitive
-            sed -i "/${domain}/Id" "${list}"
-            reload=true
-        else
-            if [[ "${verbose}" == true ]]; then
-                echo -e "  ${INFO} ${1} does not exist in ${listname}, no need to remove!"
-            fi
-        fi
-    elif [[ "${list}" == "${regexlist}" ]]; then
-        [[ -z "${type}" ]] && type="--wildcard-only"
-        domain="${1}"
-
-        [[ "${wildcard}" == true ]] && domain="(^|\\.)${domain//\./\\.}$"
-
-        bool=true
-        # Is it in the list?
-        grep -Fx "${domain}" "${regexlist}" > /dev/null 2>&1 || bool=false
-        if [[ "${bool}" == true ]]; then
-            # Remove it from the other one
-            echo -e "  ${INFO} Removing $domain from regex list..."
-            local lineNumber
-            lineNumber=$(grep -Fnx "$domain" "${list}" | cut -f1 -d:)
-            sed -i "${lineNumber}d" "${list}"
-            reload=true
-        else
-            if [[ "${verbose}" == true ]]; then
-                echo -e "  ${INFO} ${domain} does not exist in regex list, no need to remove!"
-            fi
-        fi
+
+    # Is the domain in the list we want to remove it from?
+    num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM ${list} WHERE domain = '${domain}';")"
+
+    if [[ "${num}" -eq 0 ]]; then
+      if [[ "${verbose}" == true ]]; then
+          echo -e "  ${INFO} ${1} does not exist in ${list}, no need to remove!"
+      fi
+      return
     fi
-}
 
-# Update Gravity
-Reload() {
-    echo ""
-    pihole -g --skip-download "${type:-}"
+    # Domain found in the table, remove it!
+    if [[ "${verbose}" == true ]]; then
+        echo -e "  ${INFO} Removing ${1} from the ${listname}..."
+    fi
+    reload=true
+    # Remove it from the current list
+    sqlite3 "${gravityDBfile}" "DELETE FROM ${list} WHERE domain = '${domain}';"
 }
 
 Displaylist() {
-    if [[ -f ${listMain} ]]; then
-        if [[ "${listMain}" == "${whitelist}" ]]; then
-            string="gravity resistant domains"
-        else
-            string="domains caught in the sinkhole"
-        fi
-        verbose=false
-        echo -e "Displaying $string:\n"
+    local list listname count num_pipes domain enabled status nicedate
+
+    listname="${listType}"
+    data="$(sqlite3 "${gravityDBfile}" "SELECT domain,enabled,date_modified FROM ${listType};" 2> /dev/null)"
+
+    if [[ -z $data ]]; then
+        echo -e "Not showing empty list"
+    else
+        echo -e "Displaying ${listname}:"
         count=1
-        while IFS= read -r RD || [ -n "${RD}" ]; do
-            echo "  ${count}: ${RD}"
+        while IFS= read -r line
+        do
+            # Count number of pipes seen in this line
+            # This is necessary because we can only detect the pipe separating the fields
+            # from the end backwards as the domain (which is the first field) may contain
+            # pipe symbols as they are perfectly valid regex filter control characters
+            num_pipes="$(grep -c "^" <<< "$(grep -o "|" <<< "${line}")")"
+
+            # Extract domain and enabled status based on the obtained number of pipe characters
+            domain="$(cut -d'|' -f"-$((num_pipes-1))" <<< "${line}")"
+            enabled="$(cut -d'|' -f"$((num_pipes))" <<< "${line}")"
+            datemod="$(cut -d'|' -f"$((num_pipes+1))" <<< "${line}")"
+
+            # Translate boolean status into human readable string
+            if [[ "${enabled}" -eq 1 ]]; then
+                status="enabled"
+            else
+                status="disabled"
+            fi
+
+            # Get nice representation of numerical date stored in database
+            nicedate=$(date --rfc-2822 -d "@${datemod}")
+
+            echo "  ${count}: ${domain} (${status}, last modified ${nicedate})"
             count=$((count+1))
-        done < "${listMain}"
-    else
-        echo -e "  ${COL_LIGHT_RED}${listMain} does not exist!${COL_NC}"
+        done <<< "${data}"
     fi
     exit 0;
 }
 
 NukeList() {
-    if [[ -f "${listMain}" ]]; then
-        # Back up original list
-        cp "${listMain}" "${listMain}.bck~"
-        # Empty out file
-        echo "" > "${listMain}"
-    fi
+    sqlite3 "${gravityDBfile}" "DELETE FROM ${listType};"
 }
 
 for var in "$@"; do
     case "${var}" in
-        "-w" | "whitelist"   ) listMain="${whitelist}"; listAlt="${blacklist}";;
-        "-b" | "blacklist"   ) listMain="${blacklist}"; listAlt="${whitelist}";;
-        "--wild" | "wildcard" ) listMain="${regexlist}"; wildcard=true;;
-        "--regex" | "regex"   ) listMain="${regexlist}";;
+        "-w" | "whitelist"   ) listType="whitelist"; listAlt="blacklist";;
+        "-b" | "blacklist"   ) listType="blacklist"; listAlt="whitelist";;
+        "--wild" | "wildcard" ) listType="regex_blacklist"; wildcard=true;;
+        "--regex" | "regex"   ) listType="regex_blacklist";;
+        "--white-regex" | "white-regex" ) listType="regex_whitelist";;
+        "--white-wild" | "white-wild" ) listType="regex_whitelist"; wildcard=true;;
         "-nr"| "--noreload"  ) reload=false;;
         "-d" | "--delmode"   ) addmode=false;;
         "-q" | "--quiet"     ) verbose=false;;
         "-h" | "--help"      ) helpFunc;;
         "-l" | "--list"      ) Displaylist;;
         "--nuke"             ) NukeList;;
+        "--web"              ) web=true;;
         *                    ) HandleOther "${var}";;
     esac
 done
@@ -267,9 +249,13 @@ if [[ $# = 0 ]]; then
     helpFunc
 fi
 
-PoplistFile
+ProcessDomainList
+
+# Used on web interface
+if $web; then
+echo "DONE"
+fi
 
 if [[ "${reload}" != false ]]; then
-    # Ensure that "restart" is used for Wildcard updates
-    Reload "${reload}"
+    pihole restartdns reload
 fi
diff --git a/advanced/Scripts/piholeARPTable.sh b/advanced/Scripts/piholeARPTable.sh
new file mode 100755
index 00000000..aa45f9ad
--- /dev/null
+++ b/advanced/Scripts/piholeARPTable.sh
@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC1090
+
+# Pi-hole: A black hole for Internet advertisements
+# (c) 2019 Pi-hole, LLC (https://pi-hole.net)
+# Network-wide ad blocking via your own hardware.
+#
+# ARP table interaction
+#
+# This file is copyright under the latest version of the EUPL.
+# Please see LICENSE file for your rights under this license.
+
+coltable="/opt/pihole/COL_TABLE"
+if [[ -f ${coltable} ]]; then
+    source ${coltable}
+fi
+
+# Determine database location
+# Obtain DBFILE=... setting from pihole-FTL.db
+# Constructed to return nothing when
+# a) the setting is not present in the config file, or
+# b) the setting is commented out (e.g. "#DBFILE=...")
+FTLconf="/etc/pihole/pihole-FTL.conf"
+if [ -e "$FTLconf" ]; then
+    DBFILE="$(sed -n -e 's/^\s*DBFILE\s*=\s*//p' ${FTLconf})"
+fi
+# Test for empty string. Use standard path in this case.
+if [ -z "$DBFILE" ]; then
+    DBFILE="/etc/pihole/pihole-FTL.db"
+fi
+
+
+flushARP(){
+    local output
+    if [[ "${args[1]}" != "quiet" ]]; then
+        echo -ne "  ${INFO} Flushing network table ..."
+    fi
+
+    # Flush ARP cache to avoid re-adding of dead entries
+    if ! output=$(ip neigh flush all 2>&1); then
+        echo -e "${OVER}  ${CROSS} Failed to clear ARP cache"
+        echo "  Output: ${output}"
+        return 1
+    fi
+
+    # Truncate network_addresses table in pihole-FTL.db
+    # This needs to be done before we can truncate the network table due to
+    # foreign key contraints
+    if ! output=$(sqlite3 "${DBFILE}" "DELETE FROM network_addresses" 2>&1); then
+        echo -e "${OVER}  ${CROSS} Failed to truncate network_addresses table"
+        echo "  Database location: ${DBFILE}"
+        echo "  Output: ${output}"
+        return 1
+    fi
+
+    # Truncate network table in pihole-FTL.db
+    if ! output=$(sqlite3 "${DBFILE}" "DELETE FROM network" 2>&1); then
+        echo -e "${OVER}  ${CROSS} Failed to truncate network table"
+        echo "  Database location: ${DBFILE}"
+        echo "  Output: ${output}"
+        return 1
+    fi
+
+    if [[ "${args[1]}" != "quiet" ]]; then
+        echo -e "${OVER}  ${TICK} Flushed network table"
+    fi
+}
+
+args=("$@")
+
+case "${args[0]}" in
+    "arpflush"            ) flushARP;;
+esac
diff --git a/advanced/Scripts/piholeCheckout.sh b/advanced/Scripts/piholeCheckout.sh
index c4b07a98..673ded0b 100644
--- a/advanced/Scripts/piholeCheckout.sh
+++ b/advanced/Scripts/piholeCheckout.sh
@@ -90,6 +90,7 @@ checkout() {
         local path
         path="development/${binary}"
         echo "development" > /etc/pihole/ftlbranch
+        chmod 644 /etc/pihole/ftlbranch
     elif [[ "${1}" == "master" ]] ; then
         # Shortcut to check out master branches
         echo -e "  ${INFO} Shortcut \"master\" detected - checking out master branches..."
@@ -104,6 +105,7 @@ checkout() {
         local path
         path="master/${binary}"
         echo "master" > /etc/pihole/ftlbranch
+        chmod 644 /etc/pihole/ftlbranch
     elif [[ "${1}" == "core" ]] ; then
         str="Fetching branches from ${piholeGitUrl}"
         echo -ne "  ${INFO} $str"
@@ -166,6 +168,7 @@ checkout() {
         if check_download_exists "$path"; then
             echo "  ${TICK} Branch ${2} exists"
             echo "${2}" > /etc/pihole/ftlbranch
+            chmod 644 /etc/pihole/ftlbranch
             FTLinstall "${binary}"
             restart_service pihole-FTL
             enable_service pihole-FTL
diff --git a/advanced/Scripts/piholeDebug.sh b/advanced/Scripts/piholeDebug.sh
index 1010f26c..84e34416 100755
--- a/advanced/Scripts/piholeDebug.sh
+++ b/advanced/Scripts/piholeDebug.sh
@@ -89,16 +89,40 @@ PIHOLE_WILDCARD_CONFIG_FILE="${DNSMASQ_D_DIRECTORY}/03-wildcard.conf"
 WEB_SERVER_CONFIG_FILE="${WEB_SERVER_CONFIG_DIRECTORY}/lighttpd.conf"
 #WEB_SERVER_CUSTOM_CONFIG_FILE="${WEB_SERVER_CONFIG_DIRECTORY}/external.conf"
 
-PIHOLE_DEFAULT_AD_LISTS="${PIHOLE_DIRECTORY}/adlists.default"
-PIHOLE_USER_DEFINED_AD_LISTS="${PIHOLE_DIRECTORY}/adlists.list"
-PIHOLE_BLACKLIST_FILE="${PIHOLE_DIRECTORY}/blacklist.txt"
-PIHOLE_BLOCKLIST_FILE="${PIHOLE_DIRECTORY}/gravity.list"
 PIHOLE_INSTALL_LOG_FILE="${PIHOLE_DIRECTORY}/install.log"
 PIHOLE_RAW_BLOCKLIST_FILES="${PIHOLE_DIRECTORY}/list.*"
 PIHOLE_LOCAL_HOSTS_FILE="${PIHOLE_DIRECTORY}/local.list"
 PIHOLE_LOGROTATE_FILE="${PIHOLE_DIRECTORY}/logrotate"
 PIHOLE_SETUP_VARS_FILE="${PIHOLE_DIRECTORY}/setupVars.conf"
-PIHOLE_WHITELIST_FILE="${PIHOLE_DIRECTORY}/whitelist.txt"
+PIHOLE_FTL_CONF_FILE="${PIHOLE_DIRECTORY}/pihole-FTL.conf"
+
+# Read the value of an FTL config key. The value is printed to stdout.
+#
+# Args:
+# 1. The key to read
+# 2. The default if the setting or config does not exist
+get_ftl_conf_value() {
+    local key=$1
+    local default=$2
+    local value
+
+    # Obtain key=... setting from pihole-FTL.conf
+    if [[ -e "$PIHOLE_FTL_CONF_FILE" ]]; then
+        # Constructed to return nothing when
+        # a) the setting is not present in the config file, or
+        # b) the setting is commented out (e.g. "#DBFILE=...")
+        value="$(sed -n -e "s/^\\s*$key=\\s*//p" ${PIHOLE_FTL_CONF_FILE})"
+    fi
+
+    # Test for missing value. Use default value in this case.
+    if [[ -z "$value" ]]; then
+        value="$default"
+    fi
+
+    echo "$value"
+}
+
+PIHOLE_GRAVITY_DB_FILE="$(get_ftl_conf_value "GRAVITYDB" "${PIHOLE_DIRECTORY}/gravity.db")"
 
 PIHOLE_COMMAND="${BIN_DIRECTORY}/pihole"
 PIHOLE_COLTABLE_FILE="${BIN_DIRECTORY}/COL_TABLE"
@@ -109,7 +133,7 @@ FTL_PORT="${RUN_DIRECTORY}/pihole-FTL.port"
 PIHOLE_LOG="${LOG_DIRECTORY}/pihole.log"
 PIHOLE_LOG_GZIPS="${LOG_DIRECTORY}/pihole.log.[0-9].*"
 PIHOLE_DEBUG_LOG="${LOG_DIRECTORY}/pihole_debug.log"
-PIHOLE_FTL_LOG="${LOG_DIRECTORY}/pihole-FTL.log"
+PIHOLE_FTL_LOG="$(get_ftl_conf_value "LOGFILE" "${LOG_DIRECTORY}/pihole-FTL.log")"
 
 PIHOLE_WEB_SERVER_ACCESS_LOG_FILE="${WEB_SERVER_LOG_DIRECTORY}/access.log"
 PIHOLE_WEB_SERVER_ERROR_LOG_FILE="${WEB_SERVER_LOG_DIRECTORY}/error.log"
@@ -142,16 +166,11 @@ REQUIRED_FILES=("${PIHOLE_CRON_FILE}"
 "${PIHOLE_DHCP_CONFIG_FILE}"
 "${PIHOLE_WILDCARD_CONFIG_FILE}"
 "${WEB_SERVER_CONFIG_FILE}"
-"${PIHOLE_DEFAULT_AD_LISTS}"
-"${PIHOLE_USER_DEFINED_AD_LISTS}"
-"${PIHOLE_BLACKLIST_FILE}"
-"${PIHOLE_BLOCKLIST_FILE}"
 "${PIHOLE_INSTALL_LOG_FILE}"
 "${PIHOLE_RAW_BLOCKLIST_FILES}"
 "${PIHOLE_LOCAL_HOSTS_FILE}"
 "${PIHOLE_LOGROTATE_FILE}"
 "${PIHOLE_SETUP_VARS_FILE}"
-"${PIHOLE_WHITELIST_FILE}"
 "${PIHOLE_COMMAND}"
 "${PIHOLE_COLTABLE_FILE}"
 "${FTL_PID}"
@@ -793,7 +812,7 @@ dig_at() {
     # This helps emulate queries to different domains that a user might query
     # It will also give extra assurance that Pi-hole is correctly resolving and blocking domains
     local random_url
-    random_url=$(shuf -n 1 "${PIHOLE_BLOCKLIST_FILE}")
+    random_url=$(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT domain FROM vw_gravity ORDER BY RANDOM() LIMIT 1")
 
     # First, do a dig on localhost to see if Pi-hole can use itself to block a domain
     if local_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @${local_address} +short "${record_type}"); then
@@ -975,8 +994,7 @@ list_files_in_dir() {
         if [[ -d "${dir_to_parse}/${each_file}" ]]; then
             # If it's a directoy, do nothing
             :
-        elif [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_BLOCKLIST_FILE}" ]] || \
-            [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_DEBUG_LOG}" ]] || \
+        elif [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_DEBUG_LOG}" ]] || \
             [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_RAW_BLOCKLIST_FILES}" ]] || \
             [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_INSTALL_LOG_FILE}" ]] || \
             [[ "${dir_to_parse}/${each_file}" == "${PIHOLE_SETUP_VARS_FILE}" ]] || \
@@ -1061,31 +1079,77 @@ head_tail_log() {
     IFS="$OLD_IFS"
 }
 
-analyze_gravity_list() {
-    echo_current_diagnostic "Gravity list"
-    local head_line
-    local tail_line
-    # Put the current Internal Field Separator into another variable so it can be restored later
+show_db_entries() {
+    local title="${1}"
+    local query="${2}"
+    local widths="${3}"
+
+    echo_current_diagnostic "${title}"
+
     OLD_IFS="$IFS"
-    # Get the lines that are in the file(s) and store them in an array for parsing later
     IFS=$'\r\n'
+    local entries=()
+    mapfile -t entries < <(\
+        sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" \
+            -cmd ".headers on" \
+            -cmd ".mode column" \
+            -cmd ".width ${widths}" \
+            "${query}"\
+    )
+
+    for line in "${entries[@]}"; do
+        log_write "   ${line}"
+    done
+
+    IFS="$OLD_IFS"
+}
+
+show_groups() {
+    show_db_entries "Groups" "SELECT * FROM \"group\"" "4 4 30 50"
+}
+
+show_adlists() {
+    show_db_entries "Adlists" "SELECT id,address,enabled,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM adlist" "4 100 7 19 19 50"
+    show_db_entries "Adlist groups" "SELECT * FROM adlist_by_group" "4 4"
+}
+
+show_whitelist() {
+    show_db_entries "Exact whitelist" "SELECT id,domain,enabled,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM whitelist" "4 100 7 19 19 50"
+    show_db_entries "Exact whitelist groups" "SELECT * FROM whitelist_by_group" "4 4"
+    show_db_entries "Regex whitelist" "SELECT id,domain,enabled,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM regex_whitelist" "4 100 7 19 19 50"
+    show_db_entries "Regex whitelist groups" "SELECT * FROM regex_whitelist_by_group" "4 4"
+}
+
+show_blacklist() {
+    show_db_entries "Exact blacklist" "SELECT id,domain,enabled,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM blacklist" "4 100 7 19 19 50"
+    show_db_entries "Exact blacklist groups" "SELECT * FROM blacklist_by_group" "4 4"
+    show_db_entries "Regex blacklist" "SELECT id,domain,enabled,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM regex_blacklist" "4 100 7 19 19 50"
+    show_db_entries "Regex blacklist groups" "SELECT * FROM regex_blacklist_by_group" "4 4"
+}
+
+analyze_gravity_list() {
+    echo_current_diagnostic "Gravity List and Database"
+
     local gravity_permissions
-    gravity_permissions=$(ls -ld "${PIHOLE_BLOCKLIST_FILE}")
+    gravity_permissions=$(ls -ld "${PIHOLE_GRAVITY_DB_FILE}")
     log_write "${COL_GREEN}${gravity_permissions}${COL_NC}"
-    local gravity_head=()
-    mapfile -t gravity_head < <(head -n 4 ${PIHOLE_BLOCKLIST_FILE})
-    log_write "   ${COL_CYAN}-----head of $(basename ${PIHOLE_BLOCKLIST_FILE})------${COL_NC}"
-    for head_line in "${gravity_head[@]}"; do
-        log_write "   ${head_line}"
-    done
+
+    local gravity_size
+    gravity_size=$(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT COUNT(*) FROM vw_gravity")
+    log_write "   Size (excluding blacklist): ${COL_CYAN}${gravity_size}${COL_NC} entries"
     log_write ""
-    local gravity_tail=()
-    mapfile -t gravity_tail < <(tail -n 4 ${PIHOLE_BLOCKLIST_FILE})
-    log_write "   ${COL_CYAN}-----tail of $(basename ${PIHOLE_BLOCKLIST_FILE})------${COL_NC}"
-    for tail_line in "${gravity_tail[@]}"; do
-        log_write "   ${tail_line}"
+
+    OLD_IFS="$IFS"
+    IFS=$'\r\n'
+    local gravity_sample=()
+    mapfile -t gravity_sample < <(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT domain FROM vw_gravity LIMIT 10")
+    log_write "   ${COL_CYAN}----- First 10 Domains -----${COL_NC}"
+
+    for line in "${gravity_sample[@]}"; do
+        log_write "   ${line}"
     done
-    # Set the IFS back to what it was
+
+    log_write ""
     IFS="$OLD_IFS"
 }
 
@@ -1236,6 +1300,10 @@ process_status
 parse_setup_vars
 check_x_headers
 analyze_gravity_list
+show_groups
+show_adlists
+show_whitelist
+show_blacklist
 show_content_of_pihole_files
 parse_locale
 analyze_pihole_log
diff --git a/advanced/Scripts/piholeLogFlush.sh b/advanced/Scripts/piholeLogFlush.sh
index 561fbce7..51e94d7c 100755
--- a/advanced/Scripts/piholeLogFlush.sh
+++ b/advanced/Scripts/piholeLogFlush.sh
@@ -39,8 +39,9 @@ if [[ "$@" == *"once"* ]]; then
         # Note that moving the file is not an option, as
         # dnsmasq would happily continue writing into the
         # moved file (it will have the same file handler)
-        cp /var/log/pihole.log /var/log/pihole.log.1
+        cp -p /var/log/pihole.log /var/log/pihole.log.1
         echo " " > /var/log/pihole.log
+        chmod 644 /var/log/pihole.log
     fi
 else
     # Manual flushing
@@ -53,6 +54,7 @@ else
         echo " " > /var/log/pihole.log
         if [ -f /var/log/pihole.log.1 ]; then
             echo " " > /var/log/pihole.log.1
+            chmod 644 /var/log/pihole.log.1
         fi
     fi
     # Delete most recent 24 hours from FTL's database, leave even older data intact (don't wipe out all history)
diff --git a/advanced/Scripts/query.sh b/advanced/Scripts/query.sh
index 2dead97d..1e1b159c 100644
--- a/advanced/Scripts/query.sh
+++ b/advanced/Scripts/query.sh
@@ -11,8 +11,7 @@
 
 # Globals
 piholeDir="/etc/pihole"
-adListsList="$piholeDir/adlists.list"
-wildcardlist="/etc/dnsmasq.d/03-pihole-wildcard.conf"
+gravityDBfile="${piholeDir}/gravity.db"
 options="$*"
 adlist=""
 all=""
@@ -23,27 +22,10 @@ matchType="match"
 colfile="/opt/pihole/COL_TABLE"
 source "${colfile}"
 
-# Print each subdomain
-# e.g: foo.bar.baz.com = "foo.bar.baz.com bar.baz.com baz.com com"
-processWildcards() {
-    IFS="." read -r -a array <<< "${1}"
-    for (( i=${#array[@]}-1; i>=0; i-- )); do
-        ar=""
-        for (( j=${#array[@]}-1; j>${#array[@]}-i-2; j-- )); do
-            if [[ $j == $((${#array[@]}-1)) ]]; then
-                ar="${array[$j]}"
-            else
-                ar="${array[$j]}.${ar}"
-            fi
-        done
-        echo "${ar}"
-    done
-}
-
 # Scan an array of files for matching strings
 scanList(){
     # Escape full stops
-    local domain="${1//./\\.}" lists="${2}" type="${3:-}"
+    local domain="${1}" esc_domain="${1//./\\.}" lists="${2}" type="${3:-}"
 
     # Prevent grep from printing file path
     cd "$piholeDir" || exit 1
@@ -54,9 +36,14 @@ scanList(){
     # /dev/null forces filename to be printed when only one list has been generated
     # shellcheck disable=SC2086
     case "${type}" in
-        "exact" ) grep -i -E "(^|\\s)${domain}($|\\s|#)" ${lists} /dev/null 2>/dev/null;;
-        "wc"    ) grep -i -o -m 1 "/${domain}/" ${lists} 2>/dev/null;;
-        *       ) grep -i "${domain}" ${lists} /dev/null 2>/dev/null;;
+        "exact" ) grep -i -E -l "(^|(?<!#)\\s)${esc_domain}($|\\s|#)" ${lists} /dev/null 2>/dev/null;;
+        # Create array of regexps
+        # Iterate through each regexp and check whether it matches the domainQuery
+        # If it does, print the matching regexp and continue looping
+        # Input 1 - regexps | Input 2 - domainQuery
+        "regex" ) awk 'NR==FNR{regexps[$0];next}{for (r in regexps)if($0 ~ r)print r}' \
+                  <(echo "${lists}") <(echo "${domain}") 2>/dev/null;;
+        *       ) grep -i "${esc_domain}" ${lists} /dev/null 2>/dev/null;;
     esac
 }
 
@@ -73,11 +60,6 @@ Options:
   exit 0
 fi
 
-if [[ ! -e "$adListsList" ]]; then
-    echo -e "${COL_LIGHT_RED}The file $adListsList was not found${COL_NC}"
-    exit 1
-fi
-
 # Handle valid options
 if [[ "${options}" == *"-bp"* ]]; then
     exact="exact"; blockpage=true
@@ -107,49 +89,93 @@ if [[ -n "${str:-}" ]]; then
     exit 1
 fi
 
-# Scan Whitelist and Blacklist
-lists="whitelist.txt blacklist.txt"
-mapfile -t results <<< "$(scanList "${domainQuery}" "${lists}" "${exact}")"
-if [[ -n "${results[*]}" ]]; then
+scanDatabaseTable() {
+    local domain table type querystr result
+    domain="$(printf "%q" "${1}")"
+    table="${2}"
+    type="${3:-}"
+
+    # As underscores are legitimate parts of domains, we escape them when using the LIKE operator.
+    # Underscores are SQLite wildcards matching exactly one character. We obviously want to suppress this
+    # behavior. The "ESCAPE '\'" clause specifies that an underscore preceded by an '\' should be matched
+    # as a literal underscore character. We pretreat the $domain variable accordingly to escape underscores.
+    case "${type}" in
+        "exact" ) querystr="SELECT domain FROM vw_${table} WHERE domain = '${domain}'";;
+        *       ) querystr="SELECT domain FROM vw_${table} WHERE domain LIKE '%${domain//_/\\_}%' ESCAPE '\\'";;
+    esac
+
+    # Send prepared query to gravity database
+    result="$(sqlite3 "${gravityDBfile}" "${querystr}")" 2> /dev/null
+    if [[ -z "${result}" ]]; then
+        # Return early when there are no matches in this table
+        return
+    fi
+
+    # Mark domain as having been white-/blacklist matched (global variable)
     wbMatch=true
-    # Loop through each result in order to print unique file title once
+
+    # Print table name
+    if [[ -z "${blockpage}" ]]; then
+        echo " ${matchType^} found in ${COL_BOLD}${table^}${COL_NC}"
+    fi
+
+    # Loop over results and print them
+    mapfile -t results <<< "${result}"
     for result in "${results[@]}"; do
-        fileName="${result%%.*}"
         if [[ -n "${blockpage}" ]]; then
             echo "π ${result}"
             exit 0
-        elif [[ -n "${exact}" ]]; then
-            echo " ${matchType^} found in ${COL_BOLD}${fileName^}${COL_NC}"
-        else
-            # Only print filename title once per file
-            if [[ ! "${fileName}" == "${fileName_prev:-}" ]]; then
-                echo " ${matchType^} found in ${COL_BOLD}${fileName^}${COL_NC}"
-                fileName_prev="${fileName}"
-            fi
-        echo "   ${result#*:}"
         fi
+        echo "   ${result}"
     done
-fi
+}
 
-# Scan Wildcards
-if [[ -e "${wildcardlist}" ]]; then
-    # Determine all subdomains, domain and TLDs
-    mapfile -t wildcards <<< "$(processWildcards "${domainQuery}")"
-    for match in "${wildcards[@]}"; do
-        # Search wildcard list for matches
-        mapfile -t results <<< "$(scanList "${match}" "${wildcardlist}" "wc")"
-        if [[ -n "${results[*]}" ]]; then
-            if [[ -z "${wcMatch:-}" ]] && [[ -z "${blockpage}" ]]; then
+scanRegexDatabaseTable() {
+    local domain list
+    domain="${1}"
+    list="${2}"
+
+    # Query all regex from the corresponding database tables
+    mapfile -t regexList < <(sqlite3 "${gravityDBfile}" "SELECT domain FROM vw_regex_${list}" 2> /dev/null)
+
+    # If we have regexps to process
+    if [[ "${#regexList[@]}" -ne 0 ]]; then
+        # Split regexps over a new line
+        str_regexList=$(printf '%s\n' "${regexList[@]}")
+        # Check domain against regexps
+        mapfile -t regexMatches < <(scanList "${domain}" "${str_regexList}" "regex")
+        # If there were regex matches
+        if [[  "${#regexMatches[@]}" -ne 0 ]]; then
+            # Split matching regexps over a new line
+            str_regexMatches=$(printf '%s\n' "${regexMatches[@]}")
+            # Form a "matched" message
+            str_message="${matchType^} found in ${COL_BOLD}Regex ${list}${COL_NC}"
+            # Form a "results" message
+            str_result="${COL_BOLD}${str_regexMatches}${COL_NC}"
+            # If we are displaying more than just the source of the block
+            if [[ -z "${blockpage}" ]]; then
+                # Set the wildcard match flag
                 wcMatch=true
-                echo " ${matchType^} found in ${COL_BOLD}Wildcards${COL_NC}:"
+                # Echo the "matched" message, indented by one space
+                echo " ${str_message}"
+                # Echo the "results" message, each line indented by three spaces
+                # shellcheck disable=SC2001
+                echo "${str_result}" | sed 's/^/   /'
+            else
+                echo "π .wildcard"
+                exit 0
             fi
-            case "${blockpage}" in
-                true ) echo "π ${wildcardlist##*/}"; exit 0;;
-                *    ) echo "   *.${match}";;
-            esac
         fi
-    done
-fi
+    fi
+}
+
+# Scan Whitelist and Blacklist
+scanDatabaseTable "${domainQuery}" "whitelist" "${exact}"
+scanDatabaseTable "${domainQuery}" "blacklist" "${exact}"
+
+# Scan Regex table
+scanRegexDatabaseTable "${domainQuery}" "whitelist"
+scanRegexDatabaseTable "${domainQuery}" "blacklist"
 
 # Get version sorted *.domains filenames (without dir path)
 lists=("$(cd "$piholeDir" || exit 0; printf "%s\\n" -- *.domains | sort -V)")
@@ -186,11 +212,8 @@ fi
 
 # Get adlist file content as array
 if [[ -n "${adlist}" ]] || [[ -n "${blockpage}" ]]; then
-    for adlistUrl in $(< "${adListsList}"); do
-        if [[ "${adlistUrl:0:4}" =~ (http|www.) ]]; then
-            adlists+=("${adlistUrl}")
-        fi
-    done
+    # Retrieve source URLs from gravity database
+    mapfile -t adlists <<< "$(sqlite3 "${gravityDBfile}" "SELECT address FROM vw_adlist;" 2> /dev/null)"
 fi
 
 # Print "Exact matches for" title
diff --git a/advanced/Scripts/updatecheck.sh b/advanced/Scripts/updatecheck.sh
index 26dc2ac2..afb03ebb 100755
--- a/advanced/Scripts/updatecheck.sh
+++ b/advanced/Scripts/updatecheck.sh
@@ -51,6 +51,7 @@ if [[ "$2" == "remote" ]]; then
 
     GITHUB_CORE_VERSION="$(json_extract tag_name "$(curl -s 'https://api.github.com/repos/pi-hole/pi-hole/releases/latest' 2> /dev/null)")"
     echo -n "${GITHUB_CORE_VERSION}" > "${GITHUB_VERSION_FILE}"
+    chmod 644 "${GITHUB_VERSION_FILE}"
 
     if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
         GITHUB_WEB_VERSION="$(json_extract tag_name "$(curl -s 'https://api.github.com/repos/pi-hole/AdminLTE/releases/latest' 2> /dev/null)")"
@@ -66,6 +67,7 @@ else
 
     CORE_BRANCH="$(get_local_branch /etc/.pihole)"
     echo -n "${CORE_BRANCH}" > "${LOCAL_BRANCH_FILE}"
+    chmod 644 "${LOCAL_BRANCH_FILE}"
 
     if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
         WEB_BRANCH="$(get_local_branch /var/www/html/admin)"
@@ -79,6 +81,7 @@ else
 
     CORE_VERSION="$(get_local_version /etc/.pihole)"
     echo -n "${CORE_VERSION}" > "${LOCAL_VERSION_FILE}"
+    chmod 644 "${LOCAL_VERSION_FILE}"
 
     if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
         WEB_VERSION="$(get_local_version /var/www/html/admin)"
diff --git a/advanced/Scripts/webpage.sh b/advanced/Scripts/webpage.sh
index dc2c83af..7568d119 100755
--- a/advanced/Scripts/webpage.sh
+++ b/advanced/Scripts/webpage.sh
@@ -19,6 +19,8 @@ readonly dhcpstaticconfig="/etc/dnsmasq.d/04-pihole-static-dhcp.conf"
 readonly PI_HOLE_BIN_DIR="/usr/local/bin"
 readonly dnscustomfile="/etc/pihole/custom.list"
 
+readonly gravityDBfile="/etc/pihole/gravity.db"
+
 coltable="/opt/pihole/COL_TABLE"
 if [[ -f ${coltable} ]]; then
     source ${coltable}
@@ -87,9 +89,9 @@ SetTemperatureUnit() {
 
 HashPassword() {
     # Compute password hash twice to avoid rainbow table vulnerability
-    return=$(echo -n ${1} | sha256sum | sed 's/\s.*$//')
-    return=$(echo -n ${return} | sha256sum | sed 's/\s.*$//')
-    echo ${return}
+    return=$(echo -n "${1}" | sha256sum | sed 's/\s.*$//')
+    return=$(echo -n "${return}" | sha256sum | sed 's/\s.*$//')
+    echo "${return}"
 }
 
 SetWebPassword() {
@@ -143,18 +145,18 @@ ProcessDNSSettings() {
     delete_dnsmasq_setting "server"
 
     COUNTER=1
-    while [[ 1 ]]; do
+    while true ; do
         var=PIHOLE_DNS_${COUNTER}
         if [ -z "${!var}" ]; then
             break;
         fi
         add_dnsmasq_setting "server" "${!var}"
-        let COUNTER=COUNTER+1
+        (( COUNTER++ ))
     done
 
     # The option LOCAL_DNS_PORT is deprecated
     # We apply it once more, and then convert it into the current format
-    if [ ! -z "${LOCAL_DNS_PORT}" ]; then
+    if [ -n "${LOCAL_DNS_PORT}" ]; then
         add_dnsmasq_setting "server" "127.0.0.1#${LOCAL_DNS_PORT}"
         add_setting "PIHOLE_DNS_${COUNTER}" "127.0.0.1#${LOCAL_DNS_PORT}"
         delete_setting "LOCAL_DNS_PORT"
@@ -184,7 +186,7 @@ trust-anchor=.,20326,8,2,E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC68345710423
 
     delete_dnsmasq_setting "host-record"
 
-    if [ ! -z "${HOSTRECORD}" ]; then
+    if [ -n "${HOSTRECORD}" ]; then
         add_dnsmasq_setting "host-record" "${HOSTRECORD}"
     fi
 
@@ -212,6 +214,11 @@ trust-anchor=.,20326,8,2,E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC68345710423
         add_dnsmasq_setting "server=/${CONDITIONAL_FORWARDING_DOMAIN}/${CONDITIONAL_FORWARDING_IP}"
         add_dnsmasq_setting "server=/${CONDITIONAL_FORWARDING_REVERSE}/${CONDITIONAL_FORWARDING_IP}"
     fi
+
+    # Prevent Firefox from automatically switching over to DNS-over-HTTPS
+    # This follows https://support.mozilla.org/en-US/kb/configuring-networks-disable-dns-over-https
+    # (sourced 7th September 2019)
+    add_dnsmasq_setting "server=/use-application-dns.net/"
 }
 
 SetDNSServers() {
@@ -324,6 +331,7 @@ dhcp-option=option:router,${DHCP_ROUTER}
 dhcp-leasefile=/etc/pihole/dhcp.leases
 #quiet-dhcp
 " > "${dhcpconfig}"
+    chmod 644 "${dhcpconfig}"
 
     if [[ "${PIHOLE_DOMAIN}" != "none" ]]; then
         echo "domain=${PIHOLE_DOMAIN}" >> "${dhcpconfig}"
@@ -395,19 +403,17 @@ SetWebUILayout() {
 }
 
 CustomizeAdLists() {
-    list="/etc/pihole/adlists.list"
+    local address
+    address="${args[3]}"
 
     if [[ "${args[2]}" == "enable" ]]; then
-        sed -i "\\@${args[3]}@s/^#http/http/g" "${list}"
+        sqlite3 "${gravityDBfile}" "UPDATE adlist SET enabled = 1 WHERE address = '${address}'"
     elif [[ "${args[2]}" == "disable" ]]; then
-        sed -i "\\@${args[3]}@s/^http/#http/g" "${list}"
+        sqlite3 "${gravityDBfile}" "UPDATE adlist SET enabled = 0 WHERE address = '${address}'"
     elif [[ "${args[2]}" == "add" ]]; then
-        if [[ $(grep -c "^${args[3]}$" "${list}") -eq 0 ]] ; then
-            echo "${args[3]}" >> ${list}
-        fi
+        sqlite3 "${gravityDBfile}" "INSERT OR IGNORE INTO adlist (address) VALUES ('${address}')"
     elif [[ "${args[2]}" == "del" ]]; then
-        var=$(echo "${args[3]}" | sed 's/\//\\\//g')
-        sed -i "/${var}/Id" "${list}"
+        sqlite3 "${gravityDBfile}" "DELETE FROM adlist WHERE address = '${address}'"
     else
         echo "Not permitted"
         return 1
@@ -519,10 +525,10 @@ Interfaces:
   fi
 
     if [[ "${args[2]}" == "all" ]]; then
-        echo -e "  ${INFO} Listening on all interfaces, permiting all origins. Please use a firewall!"
+        echo -e "  ${INFO} Listening on all interfaces, permitting all origins. Please use a firewall!"
         change_setting "DNSMASQ_LISTENING" "all"
     elif [[ "${args[2]}" == "local" ]]; then
-        echo -e "  ${INFO} Listening on all interfaces, permiting origins from one hop away (LAN)"
+        echo -e "  ${INFO} Listening on all interfaces, permitting origins from one hop away (LAN)"
         change_setting "DNSMASQ_LISTENING" "local"
     else
         echo -e "  ${INFO} Listening only on interface ${PIHOLE_INTERFACE}"
@@ -539,23 +545,50 @@ Interfaces:
 }
 
 Teleporter() {
-    local datetimestamp=$(date "+%Y-%m-%d_%H-%M-%S")
+    local datetimestamp
+    datetimestamp=$(date "+%Y-%m-%d_%H-%M-%S")
     php /var/www/html/admin/scripts/pi-hole/php/teleporter.php > "pi-hole-teleporter_${datetimestamp}.tar.gz"
 }
 
+checkDomain()
+{
+    local domain validDomain
+    # Convert to lowercase
+    domain="${1,,}"
+    validDomain=$(grep -P "^((-|_)*[a-z\\d]((-|_)*[a-z\\d])*(-|_)*)(\\.(-|_)*([a-z\\d]((-|_)*[a-z\\d])*))*$" <<< "${domain}") # Valid chars check
+    validDomain=$(grep -P "^[^\\.]{1,63}(\\.[^\\.]{1,63})*$" <<< "${validDomain}") # Length of each label
+    echo "${validDomain}"
+}
+
 addAudit()
 {
     shift # skip "-a"
     shift # skip "audit"
-    for var in "$@"
+    local domains validDomain
+    domains=""
+    for domain in "$@"
     do
-        echo "${var}" >> /etc/pihole/auditlog.list
+      # Check domain to be added. Only continue if it is valid
+      validDomain="$(checkDomain "${domain}")"
+      if [[ -n "${validDomain}" ]]; then
+        # Put comma in between domains when there is
+        # more than one domains to be added
+        # SQL INSERT allows adding multiple rows at once using the format
+        ## INSERT INTO table (domain) VALUES ('abc.de'),('fgh.ij'),('klm.no'),('pqr.st');
+        if [[ -n "${domains}" ]]; then
+          domains="${domains},"
+        fi
+        domains="${domains}('${domain}')"
+      fi
     done
+    # Insert only the domain here. The date_added field will be
+    # filled with its default value (date_added = current timestamp)
+    sqlite3 "${gravityDBfile}" "INSERT INTO domain_audit (domain) VALUES ${domains};"
 }
 
 clearAudit()
 {
-    echo -n "" > /etc/pihole/auditlog.list
+    sqlite3 "${gravityDBfile}" "DELETE FROM domain_audit;"
 }
 
 SetPrivacyLevel() {
diff --git a/advanced/Templates/gravity.db.sql b/advanced/Templates/gravity.db.sql
new file mode 100644
index 00000000..d0c744f4
--- /dev/null
+++ b/advanced/Templates/gravity.db.sql
@@ -0,0 +1,142 @@
+PRAGMA FOREIGN_KEYS=ON;
+
+CREATE TABLE "group"
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	name TEXT NOT NULL,
+	description TEXT
+);
+
+CREATE TABLE whitelist
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	domain TEXT UNIQUE NOT NULL,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	date_modified INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	comment TEXT
+);
+
+CREATE TABLE whitelist_by_group
+(
+	whitelist_id INTEGER NOT NULL REFERENCES whitelist (id),
+	group_id INTEGER NOT NULL REFERENCES "group" (id),
+	PRIMARY KEY (whitelist_id, group_id)
+);
+
+CREATE TABLE blacklist
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	domain TEXT UNIQUE NOT NULL,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	date_modified INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	comment TEXT
+);
+
+CREATE TABLE blacklist_by_group
+(
+	blacklist_id INTEGER NOT NULL REFERENCES blacklist (id),
+	group_id INTEGER NOT NULL REFERENCES "group" (id),
+	PRIMARY KEY (blacklist_id, group_id)
+);
+
+CREATE TABLE regex
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	domain TEXT UNIQUE NOT NULL,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	date_modified INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	comment TEXT
+);
+
+CREATE TABLE regex_by_group
+(
+	regex_id INTEGER NOT NULL REFERENCES regex (id),
+	group_id INTEGER NOT NULL REFERENCES "group" (id),
+	PRIMARY KEY (regex_id, group_id)
+);
+
+CREATE TABLE adlist
+(
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	address TEXT UNIQUE NOT NULL,
+	enabled BOOLEAN NOT NULL DEFAULT 1,
+	date_added INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	date_modified INTEGER NOT NULL DEFAULT (cast(strftime('%s', 'now') as int)),
+	comment TEXT
+);
+
+CREATE TABLE adlist_by_group
+(
+	adlist_id INTEGER NOT NULL REFERENCES adlist (id),
+	group_id INTEGER NOT NULL REFERENCES "group" (id),
+	PRIMARY KEY (adlist_id, group_id)
+);
+
+CREATE TABLE gravity
+(
+	domain TEXT PRIMARY KEY
+);
+
+CREATE TABLE info
+(
+	property TEXT PRIMARY KEY,
+	value TEXT NOT NULL
+);
+
+INSERT INTO info VALUES("version","1");
+
+CREATE VIEW vw_whitelist AS SELECT DISTINCT domain
+    FROM whitelist
+    LEFT JOIN whitelist_by_group ON whitelist_by_group.whitelist_id = whitelist.id
+    LEFT JOIN "group" ON "group".id = whitelist_by_group.group_id
+    WHERE whitelist.enabled = 1 AND (whitelist_by_group.group_id IS NULL OR "group".enabled = 1)
+    ORDER BY whitelist.id;
+
+CREATE TRIGGER tr_whitelist_update AFTER UPDATE ON whitelist
+    BEGIN
+      UPDATE whitelist SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE domain = NEW.domain;
+    END;
+
+CREATE VIEW vw_blacklist AS SELECT DISTINCT domain
+    FROM blacklist
+    LEFT JOIN blacklist_by_group ON blacklist_by_group.blacklist_id = blacklist.id
+    LEFT JOIN "group" ON "group".id = blacklist_by_group.group_id
+    WHERE blacklist.enabled = 1 AND (blacklist_by_group.group_id IS NULL OR "group".enabled = 1)
+    ORDER BY blacklist.id;
+
+CREATE TRIGGER tr_blacklist_update AFTER UPDATE ON blacklist
+    BEGIN
+      UPDATE blacklist SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE domain = NEW.domain;
+    END;
+
+CREATE VIEW vw_regex AS SELECT DISTINCT domain
+    FROM regex
+    LEFT JOIN regex_by_group ON regex_by_group.regex_id = regex.id
+    LEFT JOIN "group" ON "group".id = regex_by_group.group_id
+    WHERE regex.enabled = 1 AND (regex_by_group.group_id IS NULL OR "group".enabled = 1)
+    ORDER BY regex.id;
+
+CREATE TRIGGER tr_regex_update AFTER UPDATE ON regex
+    BEGIN
+      UPDATE regex SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE domain = NEW.domain;
+    END;
+
+CREATE VIEW vw_adlist AS SELECT DISTINCT address
+    FROM adlist
+    LEFT JOIN adlist_by_group ON adlist_by_group.adlist_id = adlist.id
+    LEFT JOIN "group" ON "group".id = adlist_by_group.group_id
+    WHERE adlist.enabled = 1 AND (adlist_by_group.group_id IS NULL OR "group".enabled = 1)
+    ORDER BY adlist.id;
+
+CREATE TRIGGER tr_adlist_update AFTER UPDATE ON adlist
+    BEGIN
+      UPDATE adlist SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE address = NEW.address;
+    END;
+
+CREATE VIEW vw_gravity AS SELECT domain
+    FROM gravity
+    WHERE domain NOT IN (SELECT domain from vw_whitelist);
diff --git a/advanced/bash-completion/pihole b/advanced/bash-completion/pihole
index 7ba0dad8..cea36060 100644
--- a/advanced/bash-completion/pihole
+++ b/advanced/bash-completion/pihole
@@ -7,7 +7,7 @@ _pihole() {
 
 	case "${prev}" in
 		"pihole")
-			opts="admin blacklist checkout chronometer debug disable enable flush help logging query reconfigure regex restartdns status tail uninstall updateGravity updatePihole version wildcard whitelist"
+			opts="admin blacklist checkout chronometer debug disable enable flush help logging query reconfigure regex restartdns status tail uninstall updateGravity updatePihole version wildcard whitelist arpflush"
 			COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
 		;;
 		"whitelist"|"blacklist"|"wildcard"|"regex")
diff --git a/advanced/index.php b/advanced/index.php
index 78135e1a..62e45091 100644
--- a/advanced/index.php
+++ b/advanced/index.php
@@ -102,20 +102,30 @@ if ($blocklistglob === array()) {
     die("[ERROR] There are no domain lists generated lists within <code>/etc/pihole/</code>! Please update gravity by running <code>pihole -g</code>, or repair Pi-hole using <code>pihole -r</code>.");
 }
 
-// Set location of adlists file
-if (is_file("/etc/pihole/adlists.list")) {
-    $adLists = "/etc/pihole/adlists.list";
-} elseif (is_file("/etc/pihole/adlists.default")) {
-    $adLists = "/etc/pihole/adlists.default";
+// Get possible non-standard location of FTL's database
+$FTLsettings = parse_ini_file("/etc/pihole/pihole-FTL.conf");
+if (isset($FTLsettings["GRAVITYDB"])) {
+    $gravityDBFile = $FTLsettings["GRAVITYDB"];
 } else {
-    die("[ERROR] File not found: <code>/etc/pihole/adlists.list</code>");
+    $gravityDBFile = "/etc/pihole/gravity.db";
 }
 
-// Get all URLs starting with "http" or "www" from adlists and re-index array numerically
-$adlistsUrls = array_values(preg_grep("/(^http)|(^www)/i", file($adLists, FILE_IGNORE_NEW_LINES)));
+// Connect to gravity.db
+try {
+    $db = new SQLite3($gravityDBFile, SQLITE3_OPEN_READONLY);
+} catch (Exception $exception) {
+    die("[ERROR]: Failed to connect to gravity.db");
+}
+
+// Get all adlist addresses
+$adlistResults = $db->query("SELECT address FROM vw_adlist");
+$adlistsUrls = array();
+while ($row = $adlistResults->fetchArray()) {
+    array_push($adlistsUrls, $row[0]);
+}
 
 if (empty($adlistsUrls))
-    die("[ERROR]: There are no adlist URL's found within <code>$adLists</code>");
+    die("[ERROR]: There are no adlists enabled");
 
 // Get total number of blocklists (Including Whitelist, Blacklist & Wildcard lists)
 $adlistsCount = count($adlistsUrls) + 3;
diff --git a/automated install/basic-install.sh b/automated install/basic-install.sh
index f99d02ab..c887a6c6 100755
--- a/automated install/basic-install.sh	
+++ b/automated install/basic-install.sh	
@@ -70,7 +70,6 @@ PI_HOLE_BLOCKPAGE_DIR="${webroot}/pihole"
 useUpdateVars=false
 
 adlistFile="/etc/pihole/adlists.list"
-regexFile="/etc/pihole/regex.list"
 # Pi-hole needs an IP address; to begin, these variables are empty since we don't know what the IP is until
 # this script can run
 IPV4_ADDRESS=""
@@ -124,7 +123,7 @@ done
 # If the color table file exists,
 if [[ -f "${coltable}" ]]; then
     # source it
-    source ${coltable}
+    source "${coltable}"
 # Otherwise,
 else
     # Set these values so the installer can still run in color
@@ -188,26 +187,26 @@ if is_command apt-get ; then
     # A variable to store the command used to update the package cache
     UPDATE_PKG_CACHE="${PKG_MANAGER} update"
     # An array for something...
-    PKG_INSTALL=(${PKG_MANAGER} --yes --no-install-recommends install)
+    PKG_INSTALL=("${PKG_MANAGER}" --yes --no-install-recommends install)
     # grep -c will return 1 retVal on 0 matches, block this throwing the set -e with an OR TRUE
     PKG_COUNT="${PKG_MANAGER} -s -o Debug::NoLocking=true upgrade | grep -c ^Inst || true"
     # Some distros vary slightly so these fixes for dependencies may apply
     # on Ubuntu 18.04.1 LTS we need to add the universe repository to gain access to dialog and dhcpcd5
     APT_SOURCES="/etc/apt/sources.list"
     if awk 'BEGIN{a=1;b=0}/bionic main/{a=0}/bionic.*universe/{b=1}END{exit a + b}' ${APT_SOURCES}; then
-        if ! whiptail --defaultno --title "Dependencies Require Update to Allowed Repositories" --yesno "Would you like to enable 'universe' repository?\\n\\nThis repository is required by the following packages:\\n\\n- dhcpcd5\\n- dialog" ${r} ${c}; then
+        if ! whiptail --defaultno --title "Dependencies Require Update to Allowed Repositories" --yesno "Would you like to enable 'universe' repository?\\n\\nThis repository is required by the following packages:\\n\\n- dhcpcd5\\n- dialog" "${r}" "${c}"; then
             printf "  %b Aborting installation: dependencies could not be installed.\\n" "${CROSS}"
             exit # exit the installer
         else
             printf "  %b Enabling universe package repository for Ubuntu Bionic\\n" "${INFO}"
-            cp ${APT_SOURCES} ${APT_SOURCES}.backup # Backup current repo list
+            cp -p ${APT_SOURCES} ${APT_SOURCES}.backup # Backup current repo list
             printf "  %b Backed up current configuration to %s\\n" "${TICK}" "${APT_SOURCES}.backup"
             add-apt-repository universe
             printf "  %b Enabled %s\\n" "${TICK}" "'universe' repository"
         fi
     fi
     # Debian 7 doesn't have iproute2 so if the dry run install is successful,
-    if ${PKG_MANAGER} install --dry-run iproute2 > /dev/null 2>&1; then
+    if "${PKG_MANAGER}" install --dry-run iproute2 > /dev/null 2>&1; then
         # we can install it
         iproute_pkg="iproute2"
     # Otherwise,
@@ -228,7 +227,7 @@ if is_command apt-get ; then
     # Check if installed php is v 7.0, or newer to determine packages to install
     if [[ "$phpInsNewer" != true ]]; then
         # Prefer the php metapackage if it's there
-        if ${PKG_MANAGER} install --dry-run php > /dev/null 2>&1; then
+        if "${PKG_MANAGER}" install --dry-run php > /dev/null 2>&1; then
             phpVer="php"
         # fall back on the php5 packages
         else
@@ -239,19 +238,19 @@ if is_command apt-get ; then
         phpVer="php$phpInsMajor.$phpInsMinor"
     fi
     # We also need the correct version for `php-sqlite` (which differs across distros)
-    if ${PKG_MANAGER} install --dry-run ${phpVer}-sqlite3 > /dev/null 2>&1; then
+    if "${PKG_MANAGER}" install --dry-run "${phpVer}-sqlite3" > /dev/null 2>&1; then
         phpSqlite="sqlite3"
     else
         phpSqlite="sqlite"
     fi
     # Since our install script is so large, we need several other programs to successfully get a machine provisioned
     # These programs are stored in an array so they can be looped through later
-    INSTALLER_DEPS=(apt-utils dialog debconf dhcpcd5 git ${iproute_pkg} whiptail)
+    INSTALLER_DEPS=(apt-utils dialog debconf dhcpcd5 git "${iproute_pkg}" whiptail)
     # Pi-hole itself has several dependencies that also need to be installed
     PIHOLE_DEPS=(cron curl dnsutils iputils-ping lsof netcat psmisc sudo unzip wget idn2 sqlite3 libcap2-bin dns-root-data resolvconf libcap2)
     # The Web dashboard has some that also need to be installed
     # It's useful to separate the two since our repos are also setup as "Core" code and "Web" code
-    PIHOLE_WEB_DEPS=(lighttpd ${phpVer}-common ${phpVer}-cgi ${phpVer}-${phpSqlite})
+    PIHOLE_WEB_DEPS=(lighttpd "${phpVer}-common" "${phpVer}-cgi" "${phpVer}-${phpSqlite}")
     # The Web server user,
     LIGHTTPD_USER="www-data"
     # group,
@@ -287,7 +286,7 @@ elif is_command rpm ; then
 
     # Fedora and family update cache on every PKG_INSTALL call, no need for a separate update.
     UPDATE_PKG_CACHE=":"
-    PKG_INSTALL=(${PKG_MANAGER} install -y)
+    PKG_INSTALL=("${PKG_MANAGER}" install -y)
     PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l"
     INSTALLER_DEPS=(dialog git iproute newt procps-ng which chkconfig)
     PIHOLE_DEPS=(bind-utils cronie curl findutils nmap-ncat sudo unzip wget libidn2 psmisc sqlite libcap)
@@ -325,7 +324,7 @@ elif is_command rpm ; then
 
         # The default php on CentOS 7.x is 5.4 which is EOL
         # Check if the version of PHP available via installed repositories is >= to PHP 7
-        AVAILABLE_PHP_VERSION=$(${PKG_MANAGER} info php | grep -i version | grep -o '[0-9]\+' | head -1)
+        AVAILABLE_PHP_VERSION=$("${PKG_MANAGER}" info php | grep -i version | grep -o '[0-9]\+' | head -1)
         if [[ $AVAILABLE_PHP_VERSION -ge $SUPPORTED_CENTOS_PHP_VERSION ]]; then
             # Since PHP 7 is available by default, install via default PHP package names
             : # do nothing as PHP is current
@@ -335,7 +334,7 @@ elif is_command rpm ; then
             rpm -q ${REMI_PKG} &> /dev/null || rc=$?
         if [[ $rc -ne 0 ]]; then
             # The PHP version available via default repositories is older than version 7
-            if ! whiptail --defaultno --title "PHP 7 Update (recommended)" --yesno "PHP 7.x is recommended for both security and language features.\\nWould you like to install PHP7 via Remi's RPM repository?\\n\\nSee: https://rpms.remirepo.net for more information" ${r} ${c}; then
+            if ! whiptail --defaultno --title "PHP 7 Update (recommended)" --yesno "PHP 7.x is recommended for both security and language features.\\nWould you like to install PHP7 via Remi's RPM repository?\\n\\nSee: https://rpms.remirepo.net for more information" "${r}" "${c}"; then
                 # User decided to NOT update PHP from REMI, attempt to install the default available PHP version
                 printf "  %b User opt-out of PHP 7 upgrade on CentOS. Deprecated PHP may be in use.\\n" "${INFO}"
                 : # continue with unsupported php version
@@ -358,7 +357,7 @@ elif is_command rpm ; then
     fi
     else
         # Warn user of unsupported version of Fedora or CentOS
-        if ! whiptail --defaultno --title "Unsupported RPM based distribution" --yesno "Would you like to continue installation on an unsupported RPM based distribution?\\n\\nPlease ensure the following packages have been installed manually:\\n\\n- lighttpd\\n- lighttpd-fastcgi\\n- PHP version 7+" ${r} ${c}; then
+        if ! whiptail --defaultno --title "Unsupported RPM based distribution" --yesno "Would you like to continue installation on an unsupported RPM based distribution?\\n\\nPlease ensure the following packages have been installed manually:\\n\\n- lighttpd\\n- lighttpd-fastcgi\\n- PHP version 7+" "${r}" "${c}"; then
             printf "  %b Aborting installation due to unsupported RPM based distribution\\n" "${CROSS}"
             exit # exit the installer
         else
@@ -420,6 +419,9 @@ make_repo() {
     fi
     # Clone the repo and return the return code from this command
     git clone -q --depth 20 "${remoteRepo}" "${directory}" &> /dev/null || return $?
+    # Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
+    chmod -R a+rX "${directory}"
+
     # Show a colored message showing it's status
     printf "%b  %b %s\\n" "${OVER}" "${TICK}" "${str}"
     # Always return 0? Not sure this is correct
@@ -453,6 +455,8 @@ update_repo() {
     git pull --quiet &> /dev/null || return $?
     # Show a completion message
     printf "%b  %b %s\\n" "${OVER}" "${TICK}" "${str}"
+    # Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
+    chmod -R a+rX "${directory}"
     # Move back into the original directory
     cd "${curdir}" &> /dev/null || return 1
     return 0
@@ -500,6 +504,8 @@ resetRepo() {
     printf "  %b %s..." "${INFO}" "${str}"
     # Use git to remove the local changes
     git reset --hard &> /dev/null || return $?
+    # Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
+    chmod -R a+rX "${directory}"
     # And show the status
     printf "%b  %b %s\\n" "${OVER}" "${TICK}" "${str}"
     # Returning success anyway?
@@ -543,15 +549,15 @@ get_available_interfaces() {
 # A function for displaying the dialogs the user sees when first running the installer
 welcomeDialogs() {
     # Display the welcome dialog using an appropriately sized window via the calculation conducted earlier in the script
-    whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "\\n\\nThis installer will transform your device into a network-wide ad blocker!" ${r} ${c}
+    whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "\\n\\nThis installer will transform your device into a network-wide ad blocker!" "${r}" "${c}"
 
     # Request that users donate if they enjoy the software since we all work on it in our free time
-    whiptail --msgbox --backtitle "Plea" --title "Free and open source" "\\n\\nThe Pi-hole is free, but powered by your donations:  http://pi-hole.net/donate" ${r} ${c}
+    whiptail --msgbox --backtitle "Plea" --title "Free and open source" "\\n\\nThe Pi-hole is free, but powered by your donations:  http://pi-hole.net/donate" "${r}" "${c}"
 
     # Explain the need for a static address
     whiptail --msgbox --backtitle "Initiating network interface" --title "Static IP Needed" "\\n\\nThe Pi-hole is a SERVER so it needs a STATIC IP ADDRESS to function properly.
 
-In the next section, you can choose to use your current network settings (DHCP) or to manually edit them." ${r} ${c}
+In the next section, you can choose to use your current network settings (DHCP) or to manually edit them." "${r}" "${c}"
 }
 
 # We need to make sure there is enough space before installing, so there is a function to check this
@@ -638,7 +644,7 @@ chooseInterface() {
         # Feed the available interfaces into this while loop
         done <<< "${availableInterfaces}"
         # The whiptail command that will be run, stored in a variable
-        chooseInterfaceCmd=(whiptail --separate-output --radiolist "Choose An Interface (press space to select)" ${r} ${c} ${interfaceCount})
+        chooseInterfaceCmd=(whiptail --separate-output --radiolist "Choose An Interface (press space to select)" "${r}" "${c}" "${interfaceCount}")
         # Now run the command using the interfaces saved into the array
         chooseInterfaceOptions=$("${chooseInterfaceCmd[@]}" "${interfacesArray[@]}" 2>&1 >/dev/tty) || \
         # If the user chooses Cancel, exit
@@ -719,7 +725,7 @@ useIPv6dialog() {
     # If the IPV6_ADDRESS contains a value
     if [[ ! -z "${IPV6_ADDRESS}" ]]; then
         # Display that IPv6 is supported and will be used
-        whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$IPV6_ADDRESS will be used to block ads." ${r} ${c}
+        whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$IPV6_ADDRESS will be used to block ads." "${r}" "${c}"
     fi
 }
 
@@ -729,7 +735,7 @@ use4andor6() {
     local useIPv4
     local useIPv6
     # Let use select IPv4 and/or IPv6 via a checklist
-    cmd=(whiptail --separate-output --checklist "Select Protocols (press space to select)" ${r} ${c} 2)
+    cmd=(whiptail --separate-output --checklist "Select Protocols (press space to select)" "${r}" "${c}" 2)
     # In an array, show the options available:
     # IPv4 (on by default)
     options=(IPv4 "Block ads over IPv4" on
@@ -778,11 +784,11 @@ getStaticIPv4Settings() {
     # This is useful for users that are using DHCP reservations; then we can just use the information gathered via our functions
     if whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Do you want to use your current network settings as a static address?
           IP address:    ${IPV4_ADDRESS}
-          Gateway:       ${IPv4gw}" ${r} ${c}; then
+          Gateway:       ${IPv4gw}" "${r}" "${c}"; then
         # If they choose yes, let the user know that the IP address will not be available via DHCP and may cause a conflict.
         whiptail --msgbox --backtitle "IP information" --title "FYI: IP Conflict" "It is possible your router could still try to assign this IP to a device, which would cause a conflict.  But in most cases the router is smart enough to not do that.
 If you are worried, either manually set the address, or modify the DHCP reservation pool so it does not include the IP you want.
-It is also possible to use a DHCP reservation, but if you are going to do that, you might as well set a static address." ${r} ${c}
+It is also possible to use a DHCP reservation, but if you are going to do that, you might as well set a static address." "${r}" "${c}"
     # Nothing else to do since the variables are already set above
     else
     # Otherwise, we need to ask the user to input their desired settings.
@@ -791,13 +797,13 @@ It is also possible to use a DHCP reservation, but if you are going to do that,
     until [[ "${ipSettingsCorrect}" = True ]]; do
 
         # Ask for the IPv4 address
-        IPV4_ADDRESS=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" ${r} ${c} "${IPV4_ADDRESS}" 3>&1 1>&2 2>&3) || \
+        IPV4_ADDRESS=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 address" --inputbox "Enter your desired IPv4 address" "${r}" "${c}" "${IPV4_ADDRESS}" 3>&1 1>&2 2>&3) || \
         # Cancelling IPv4 settings window
         { ipSettingsCorrect=False; echo -e "  ${COL_LIGHT_RED}Cancel was selected, exiting installer${COL_NC}"; exit 1; }
         printf "  %b Your static IPv4 address: %s\\n" "${INFO}" "${IPV4_ADDRESS}"
 
         # Ask for the gateway
-        IPv4gw=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 gateway (router)" --inputbox "Enter your desired IPv4 default gateway" ${r} ${c} "${IPv4gw}" 3>&1 1>&2 2>&3) || \
+        IPv4gw=$(whiptail --backtitle "Calibrating network interface" --title "IPv4 gateway (router)" --inputbox "Enter your desired IPv4 default gateway" "${r}" "${c}" "${IPv4gw}" 3>&1 1>&2 2>&3) || \
         # Cancelling gateway settings window
         { ipSettingsCorrect=False; echo -e "  ${COL_LIGHT_RED}Cancel was selected, exiting installer${COL_NC}"; exit 1; }
         printf "  %b Your static IPv4 gateway: %s\\n" "${INFO}" "${IPv4gw}"
@@ -805,7 +811,7 @@ It is also possible to use a DHCP reservation, but if you are going to do that,
         # Give the user a chance to review their settings before moving on
         if whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Are these settings correct?
             IP address: ${IPV4_ADDRESS}
-            Gateway:    ${IPv4gw}" ${r} ${c}; then
+            Gateway:    ${IPv4gw}" "${r}" "${c}"; then
                 # After that's done, the loop ends and we move on
                 ipSettingsCorrect=True
         else
@@ -853,7 +859,7 @@ setIFCFG() {
         # Put the IP in variables without the CIDR notation
         printf -v CIDR "%s" "${IPV4_ADDRESS##*/}"
         # Backup existing interface configuration:
-        cp "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
+        cp -p "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
         # Build Interface configuration file using the GLOBAL variables we have
         {
         echo "# Configured via Pi-hole installer"
@@ -867,6 +873,8 @@ setIFCFG() {
         echo "DNS2=$PIHOLE_DNS_2"
         echo "USERCTL=no"
         }> "${IFCFG_FILE}"
+        chmod 644 "${IFCFG_FILE}"
+        chown root:root "${IFCFG_FILE}"
         # Use ip to immediately set the new address
         ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
         # If NetworkMangler command line interface exists and ready to mangle,
@@ -931,7 +939,7 @@ valid_ip() {
         # and set the new one to a dot (period)
         IFS='.'
         # Put the IP into an array
-        ip=(${ip})
+        read -r -a ip <<< "${ip}"
         # Restore the IFS to what it was
         IFS=${OIFS}
         ## Evaluate each octet by checking if it's less than or equal to 255 (the max for each octet)
@@ -941,7 +949,7 @@ valid_ip() {
         stat=$?
     fi
     # Return the exit code
-    return ${stat}
+    return "${stat}"
 }
 
 # A function to choose the upstream DNS provider(s)
@@ -971,7 +979,7 @@ setDNS() {
     # Restore the IFS to what it was
     IFS=${OIFS}
     # In a whiptail dialog, show the options
-    DNSchoices=$(whiptail --separate-output --menu "Select Upstream DNS Provider. To use your own, select Custom." ${r} ${c} 7 \
+    DNSchoices=$(whiptail --separate-output --menu "Select Upstream DNS Provider. To use your own, select Custom." "${r}" "${c}" 7 \
     "${DNSChooseOptions[@]}" 2>&1 >/dev/tty) || \
     # exit if Cancel is selected
     { printf "  %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
@@ -1001,7 +1009,7 @@ setDNS() {
             fi
 
             # Dialog for the user to enter custom upstream servers
-            piholeDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)"  --inputbox "Enter your desired upstream DNS provider(s), separated by a comma.\\n\\nFor example '8.8.8.8, 8.8.4.4'" ${r} ${c} "${prePopulate}" 3>&1 1>&2 2>&3) || \
+            piholeDNS=$(whiptail --backtitle "Specify Upstream DNS Provider(s)"  --inputbox "Enter your desired upstream DNS provider(s), separated by a comma.\\n\\nFor example '8.8.8.8, 8.8.4.4'" "${r}" "${c}" "${prePopulate}" 3>&1 1>&2 2>&3) || \
             { printf "  %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
             # Clean user input and replace whitespace with comma.
             piholeDNS=$(sed 's/[, \t]\+/,/g' <<< "${piholeDNS}")
@@ -1034,7 +1042,7 @@ setDNS() {
             # Otherwise,
             else
                 # Show the settings
-                if (whiptail --backtitle "Specify Upstream DNS Provider(s)" --title "Upstream DNS Provider(s)" --yesno "Are these settings correct?\\n    DNS Server 1:   $PIHOLE_DNS_1\\n    DNS Server 2:   ${PIHOLE_DNS_2}" ${r} ${c}); then
+                if (whiptail --backtitle "Specify Upstream DNS Provider(s)" --title "Upstream DNS Provider(s)" --yesno "Are these settings correct?\\n    DNS Server 1:   $PIHOLE_DNS_1\\n    DNS Server 2:   ${PIHOLE_DNS_2}" "${r}" "${c}"); then
                 # and break from the loop since the servers are valid
                 DNSSettingsCorrect=True
                 # Otherwise,
@@ -1125,7 +1133,7 @@ setAdminFlag() {
     local WebChoices
 
     # Similar to the logging function, ask what the user wants
-    WebToggleCommand=(whiptail --separate-output --radiolist "Do you wish to install the web admin interface?" ${r} ${c} 6)
+    WebToggleCommand=(whiptail --separate-output --radiolist "Do you wish to install the web admin interface?" "${r}" "${c}" 6)
     # with the default being enabled
     WebChooseOptions=("On (Recommended)" "" on
         Off "" off)
@@ -1190,6 +1198,7 @@ chooseBlocklists() {
     do
         appendToListsFile "${choice}"
     done
+    chmod 644 "${adlistFile}"
 }
 
 # Accept a string parameter, it must be one of the default lists
@@ -1228,6 +1237,7 @@ version_check_dnsmasq() {
     local dnsmasq_conf="/etc/dnsmasq.conf"
     local dnsmasq_conf_orig="/etc/dnsmasq.conf.orig"
     local dnsmasq_pihole_id_string="addn-hosts=/etc/pihole/gravity.list"
+    local dnsmasq_pihole_id_string2="# Dnsmasq config for Pi-hole's FTLDNS"
     local dnsmasq_original_config="${PI_HOLE_LOCAL_REPO}/advanced/dnsmasq.conf.original"
     local dnsmasq_pihole_01_snippet="${PI_HOLE_LOCAL_REPO}/advanced/01-pihole.conf"
     local dnsmasq_pihole_01_location="/etc/dnsmasq.d/01-pihole.conf"
@@ -1235,16 +1245,17 @@ version_check_dnsmasq() {
     # If the dnsmasq config file exists
     if [[ -f "${dnsmasq_conf}" ]]; then
         printf "  %b Existing dnsmasq.conf found..." "${INFO}"
-        # If gravity.list is found within this file, we presume it's from older versions on Pi-hole,
-        if grep -q ${dnsmasq_pihole_id_string} ${dnsmasq_conf}; then
+        # If a specific string is found within this file, we presume it's from older versions on Pi-hole,
+        if grep -q "${dnsmasq_pihole_id_string}" "${dnsmasq_conf}" ||
+           grep -q "${dnsmasq_pihole_id_string2}" "${dnsmasq_conf}"; then
             printf " it is from a previous Pi-hole install.\\n"
             printf "  %b Backing up dnsmasq.conf to dnsmasq.conf.orig..." "${INFO}"
             # so backup the original file
-            mv -f ${dnsmasq_conf} ${dnsmasq_conf_orig}
+            mv -f "${dnsmasq_conf}" "${dnsmasq_conf_orig}"
             printf "%b  %b Backing up dnsmasq.conf to dnsmasq.conf.orig...\\n" "${OVER}"  "${TICK}"
             printf "  %b Restoring default dnsmasq.conf..." "${INFO}"
             # and replace it with the default
-            cp ${dnsmasq_original_config} ${dnsmasq_conf}
+            install -D -m 644 -T "${dnsmasq_original_config}" "${dnsmasq_conf}"
             printf "%b  %b Restoring default dnsmasq.conf...\\n" "${OVER}"  "${TICK}"
         # Otherwise,
         else
@@ -1255,47 +1266,47 @@ version_check_dnsmasq() {
         # If a file cannot be found,
         printf "  %b No dnsmasq.conf found... restoring default dnsmasq.conf..." "${INFO}"
         # restore the default one
-        cp ${dnsmasq_original_config} ${dnsmasq_conf}
+        install -D -m 644 -T "${dnsmasq_original_config}" "${dnsmasq_conf}"
         printf "%b  %b No dnsmasq.conf found... restoring default dnsmasq.conf...\\n" "${OVER}"  "${TICK}"
     fi
 
     printf "  %b Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf..." "${INFO}"
     # Check to see if dnsmasq directory exists (it may not due to being a fresh install and dnsmasq no longer being a dependency)
     if [[ ! -d "/etc/dnsmasq.d"  ]];then
-        mkdir "/etc/dnsmasq.d"
+        install -d -m 755 "/etc/dnsmasq.d"
     fi
     # Copy the new Pi-hole DNS config file into the dnsmasq.d directory
-    cp ${dnsmasq_pihole_01_snippet} ${dnsmasq_pihole_01_location}
+    install -D -m 644 -T "${dnsmasq_pihole_01_snippet}" "${dnsmasq_pihole_01_location}"
     printf "%b  %b Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf\\n" "${OVER}"  "${TICK}"
     # Replace our placeholder values with the GLOBAL DNS variables that we populated earlier
     # First, swap in the interface to listen on
-    sed -i "s/@INT@/$PIHOLE_INTERFACE/" ${dnsmasq_pihole_01_location}
+    sed -i "s/@INT@/$PIHOLE_INTERFACE/" "${dnsmasq_pihole_01_location}"
     if [[ "${PIHOLE_DNS_1}" != "" ]]; then
         # Then swap in the primary DNS server
-        sed -i "s/@DNS1@/$PIHOLE_DNS_1/" ${dnsmasq_pihole_01_location}
+        sed -i "s/@DNS1@/$PIHOLE_DNS_1/" "${dnsmasq_pihole_01_location}"
     else
         #
-        sed -i '/^server=@DNS1@/d' ${dnsmasq_pihole_01_location}
+        sed -i '/^server=@DNS1@/d' "${dnsmasq_pihole_01_location}"
     fi
     if [[ "${PIHOLE_DNS_2}" != "" ]]; then
         # Then swap in the primary DNS server
-        sed -i "s/@DNS2@/$PIHOLE_DNS_2/" ${dnsmasq_pihole_01_location}
+        sed -i "s/@DNS2@/$PIHOLE_DNS_2/" "${dnsmasq_pihole_01_location}"
     else
         #
-        sed -i '/^server=@DNS2@/d' ${dnsmasq_pihole_01_location}
+        sed -i '/^server=@DNS2@/d' "${dnsmasq_pihole_01_location}"
     fi
 
     #
-    sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' ${dnsmasq_conf}
+    sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' "${dnsmasq_conf}"
 
     # If the user does not want to enable logging,
     if [[ "${QUERY_LOGGING}" == false ]] ; then
         # Disable it by commenting out the directive in the DNS config file
-        sed -i 's/^log-queries/#log-queries/' ${dnsmasq_pihole_01_location}
+        sed -i 's/^log-queries/#log-queries/' "${dnsmasq_pihole_01_location}"
     # Otherwise,
     else
         # enable it by uncommenting the directive in the DNS config file
-        sed -i 's/^#log-queries/log-queries/' ${dnsmasq_pihole_01_location}
+        sed -i 's/^#log-queries/log-queries/' "${dnsmasq_pihole_01_location}"
     fi
 }
 
@@ -1363,6 +1374,7 @@ installConfigs() {
     # Format: Name;Primary IPv4;Secondary IPv4;Primary IPv6;Secondary IPv6
     # Some values may be empty (for example: DNS servers without IPv6 support)
     echo "${DNS_SERVERS}" > "${PI_HOLE_CONFIG_DIR}/dns-servers.conf"
+    chmod 644 "${PI_HOLE_CONFIG_DIR}/dns-servers.conf"
 
     # Install empty file if it does not exist
     if [[ ! -r "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" ]]; then
@@ -1372,28 +1384,22 @@ installConfigs() {
             return 1
         fi
     fi
-    # Install an empty regex file
-    if [[ ! -f "${regexFile}" ]]; then
-        # Let PHP edit the regex file, if installed
-        install -o pihole -g "${LIGHTTPD_GROUP:-pihole}" -m 664 /dev/null "${regexFile}"
-    fi
     # If the user chose to install the dashboard,
     if [[ "${INSTALL_WEB_SERVER}" == true ]]; then
         # and if the Web server conf directory does not exist,
         if [[ ! -d "/etc/lighttpd" ]]; then
-            # make it
-            mkdir /etc/lighttpd
-            # and set the owners
-            chown "${USER}":root /etc/lighttpd
+            # make it and set the owners
+            install -d -m 755 -o "${USER}" -g root /etc/lighttpd
         # Otherwise, if the config file already exists
         elif [[ -f "/etc/lighttpd/lighttpd.conf" ]]; then
             # back up the original
             mv /etc/lighttpd/lighttpd.conf /etc/lighttpd/lighttpd.conf.orig
         fi
         # and copy in the config file Pi-hole needs
-        cp ${PI_HOLE_LOCAL_REPO}/advanced/${LIGHTTPD_CFG} /etc/lighttpd/lighttpd.conf
+        install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/advanced/${LIGHTTPD_CFG} /etc/lighttpd/lighttpd.conf
         # Make sure the external.conf file exists, as lighttpd v1.4.50 crashes without it
         touch /etc/lighttpd/external.conf
+        chmod 644 /etc/lighttpd/external.conf
         # if there is a custom block page in the html/pihole directory, replace 404 handler in lighttpd config
         if [[ -f "${PI_HOLE_BLOCKPAGE_DIR}/custom.php" ]]; then
             sed -i 's/^\(server\.error-handler-404\s*=\s*\).*$/\1"pihole\/custom\.php"/' /etc/lighttpd/lighttpd.conf
@@ -1424,16 +1430,16 @@ install_manpage() {
     fi
     if [[ ! -d "/usr/local/share/man/man8" ]]; then
         # if not present, create man8 directory
-        mkdir /usr/local/share/man/man8
+        install -d -m 755 /usr/local/share/man/man8
     fi
     if [[ ! -d "/usr/local/share/man/man5" ]]; then
-        # if not present, create man8 directory
-        mkdir /usr/local/share/man/man5
+        # if not present, create man5 directory
+        install -d -m 755 /usr/local/share/man/man5
     fi
     # Testing complete, copy the files & update the man db
-    cp ${PI_HOLE_LOCAL_REPO}/manpages/pihole.8 /usr/local/share/man/man8/pihole.8
-    cp ${PI_HOLE_LOCAL_REPO}/manpages/pihole-FTL.8 /usr/local/share/man/man8/pihole-FTL.8
-    cp ${PI_HOLE_LOCAL_REPO}/manpages/pihole-FTL.conf.5 /usr/local/share/man/man5/pihole-FTL.conf.5
+    install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/manpages/pihole.8 /usr/local/share/man/man8/pihole.8
+    install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/manpages/pihole-FTL.8 /usr/local/share/man/man8/pihole-FTL.8
+    install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/manpages/pihole-FTL.conf.5 /usr/local/share/man/man5/pihole-FTL.conf.5
     if mandb -q &>/dev/null; then
         # Updated successfully
         printf "%b  %b man pages installed and database updated\\n" "${OVER}" "${TICK}"
@@ -1622,7 +1628,7 @@ install_dependent_packages() {
             if dpkg-query -W -f='${Status}' "${i}" 2>/dev/null | grep "ok installed" &> /dev/null; then
                 printf "%b  %b Checking for %s\\n" "${OVER}" "${TICK}" "${i}"
             else
-                echo -e "${OVER}  ${INFO} Checking for $i (will be installed)"
+                printf "%b  %b Checking for %s (will be installed)\\n" "${OVER}" "${INFO}" "${i}"
                 installArray+=("${i}")
             fi
         done
@@ -1638,10 +1644,10 @@ install_dependent_packages() {
     # Install Fedora/CentOS packages
     for i in "$@"; do
         printf "  %b Checking for %s..." "${INFO}" "${i}"
-        if ${PKG_MANAGER} -q list installed "${i}" &> /dev/null; then
-            printf "%b  %b Checking for %s" "${OVER}" "${TICK}" "${i}"
+        if "${PKG_MANAGER}" -q list installed "${i}" &> /dev/null; then
+            printf "%b  %b Checking for %s\\n" "${OVER}" "${TICK}" "${i}"
         else
-            printf "%b  %b Checking for %s (will be installed)" "${OVER}" "${INFO}" "${i}"
+            printf "%b  %b Checking for %s (will be installed)\\n" "${OVER}" "${INFO}" "${i}"
             installArray+=("${i}")
         fi
     done
@@ -1662,7 +1668,7 @@ installPiholeWeb() {
     # Install the directory
     install -d -m 0755 ${PI_HOLE_BLOCKPAGE_DIR}
     # and the blockpage
-    install -D ${PI_HOLE_LOCAL_REPO}/advanced/{index,blockingpage}.* ${PI_HOLE_BLOCKPAGE_DIR}/
+    install -D -m 644 ${PI_HOLE_LOCAL_REPO}/advanced/{index,blockingpage}.* ${PI_HOLE_BLOCKPAGE_DIR}/
 
     # Remove superseded file
     if [[ -e "${PI_HOLE_BLOCKPAGE_DIR}/index.js" ]]; then
@@ -1681,7 +1687,7 @@ installPiholeWeb() {
     # Otherwise,
     else
         # don't do anything
-        printf "%b  %b %s\\n" "${OVER}" "${CROSS}" "${str}"
+        printf "%b  %b %s\\n" "${OVER}" "${INFO}" "${str}"
         printf "      No default index.lighttpd.html file found... not backing up\\n"
     fi
 
@@ -1689,7 +1695,7 @@ installPiholeWeb() {
     local str="Installing sudoer file"
     printf "\\n  %b %s..." "${INFO}" "${str}"
     # Make the .d directory if it doesn't exist
-    mkdir -p /etc/sudoers.d/
+    install -d -m 755 /etc/sudoers.d/
     # and copy in the pihole sudoers file
     install -m 0640 ${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole.sudo /etc/sudoers.d/pihole
     # Add lighttpd user (OS dependent) to sudoers file
@@ -1712,7 +1718,8 @@ installCron() {
     local str="Installing latest Cron script"
     printf "\\n  %b %s..." "${INFO}" "${str}"
     # Copy the cron file over from the local repo
-    cp ${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole.cron /etc/cron.d/pihole
+    # File must not be world or group writeable and must be owned by root
+    install -D -m 644 -T -o root -g root ${PI_HOLE_LOCAL_REPO}/advanced/Templates/pihole.cron /etc/cron.d/pihole
     # Randomize gravity update time
     sed -i "s/59 1 /$((1 + RANDOM % 58)) $((3 + RANDOM % 2))/" /etc/cron.d/pihole
     # Randomize update checker time
@@ -1755,7 +1762,7 @@ configureFirewall() {
     # If a firewall is running,
     if firewall-cmd --state &> /dev/null; then
         # ask if the user wants to install Pi-hole's default firewall rules
-        whiptail --title "Firewall in use" --yesno "We have detected a running firewall\\n\\nPi-hole currently requires HTTP and DNS port access.\\n\\n\\n\\nInstall Pi-hole default firewall rules?" ${r} ${c} || \
+        whiptail --title "Firewall in use" --yesno "We have detected a running firewall\\n\\nPi-hole currently requires HTTP and DNS port access.\\n\\n\\n\\nInstall Pi-hole default firewall rules?" "${r}" "${c}" || \
         { printf "  %b Not installing firewall rulesets.\\n" "${INFO}"; return 0; }
         printf "  %b Configuring FirewallD for httpd and pihole-FTL\\n" "${TICK}"
         # Allow HTTP and DNS traffic
@@ -1768,7 +1775,7 @@ configureFirewall() {
     # If chain Policy is not ACCEPT or last Rule is not ACCEPT
     # then check and insert our Rules above the DROP/REJECT Rule.
         if iptables -S INPUT | head -n1 | grep -qv '^-P.*ACCEPT$' || iptables -S INPUT | tail -n1 | grep -qv '^-\(A\|P\).*ACCEPT$'; then
-            whiptail --title "Firewall in use" --yesno "We have detected a running firewall\\n\\nPi-hole currently requires HTTP and DNS port access.\\n\\n\\n\\nInstall Pi-hole default firewall rules?" ${r} ${c} || \
+            whiptail --title "Firewall in use" --yesno "We have detected a running firewall\\n\\nPi-hole currently requires HTTP and DNS port access.\\n\\n\\n\\nInstall Pi-hole default firewall rules?" "${r}" "${c}" || \
             { printf "  %b Not installing firewall rulesets.\\n" "${INFO}"; return 0; }
             printf "  %b Installing new IPTables firewall rulesets\\n" "${TICK}"
             # Check chain first, otherwise a new rule will duplicate old ones
@@ -1820,6 +1827,7 @@ finalExports() {
     echo "INSTALL_WEB_INTERFACE=${INSTALL_WEB_INTERFACE}"
     echo "LIGHTTPD_ENABLED=${LIGHTTPD_ENABLED}"
     }>> "${setupVars}"
+    chmod 644 "${setupVars}"
 
     # Set the privacy level
     sed -i '/PRIVACYLEVEL/d' "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf"
@@ -1842,7 +1850,7 @@ installLogrotate() {
     local str="Installing latest logrotate script"
     printf "\\n  %b %s..." "${INFO}" "${str}"
     # Copy the file over from the local repo
-    cp ${PI_HOLE_LOCAL_REPO}/advanced/Templates/logrotate /etc/pihole/logrotate
+    install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/advanced/Templates/logrotate /etc/pihole/logrotate
     # Different operating systems have different user / group
     # settings for logrotate that makes it impossible to create
     # a static logrotate file that will work with e.g.
@@ -1861,29 +1869,26 @@ installLogrotate() {
 # At some point in the future this list can be pruned, for now we'll need it to ensure updates don't break.
 # Refactoring of install script has changed the name of a couple of variables. Sort them out here.
 accountForRefactor() {
-    sed -i 's/piholeInterface/PIHOLE_INTERFACE/g' ${setupVars}
-    sed -i 's/IPv4_address/IPV4_ADDRESS/g' ${setupVars}
-    sed -i 's/IPv4addr/IPV4_ADDRESS/g' ${setupVars}
-    sed -i 's/IPv6_address/IPV6_ADDRESS/g' ${setupVars}
-    sed -i 's/piholeIPv6/IPV6_ADDRESS/g' ${setupVars}
-    sed -i 's/piholeDNS1/PIHOLE_DNS_1/g' ${setupVars}
-    sed -i 's/piholeDNS2/PIHOLE_DNS_2/g' ${setupVars}
-    sed -i 's/^INSTALL_WEB=/INSTALL_WEB_INTERFACE=/' ${setupVars}
+    sed -i 's/piholeInterface/PIHOLE_INTERFACE/g' "${setupVars}"
+    sed -i 's/IPv4_address/IPV4_ADDRESS/g' "${setupVars}"
+    sed -i 's/IPv4addr/IPV4_ADDRESS/g' "${setupVars}"
+    sed -i 's/IPv6_address/IPV6_ADDRESS/g' "${setupVars}"
+    sed -i 's/piholeIPv6/IPV6_ADDRESS/g' "${setupVars}"
+    sed -i 's/piholeDNS1/PIHOLE_DNS_1/g' "${setupVars}"
+    sed -i 's/piholeDNS2/PIHOLE_DNS_2/g' "${setupVars}"
+    sed -i 's/^INSTALL_WEB=/INSTALL_WEB_INTERFACE=/' "${setupVars}"
     # Add 'INSTALL_WEB_SERVER', if its not been applied already: https://github.com/pi-hole/pi-hole/pull/2115
     if ! grep -q '^INSTALL_WEB_SERVER=' ${setupVars}; then
         local webserver_installed=false
         if grep -q '^INSTALL_WEB_INTERFACE=true' ${setupVars}; then
             webserver_installed=true
         fi
-        echo -e "INSTALL_WEB_SERVER=$webserver_installed" >> ${setupVars}
+        echo -e "INSTALL_WEB_SERVER=$webserver_installed" >> "${setupVars}"
     fi
 }
 
 # Install base files and web interface
 installPihole() {
-    # Create the pihole user
-    create_pihole_user
-
     # If the user wants to install the Web interface,
     if [[ "${INSTALL_WEB_INTERFACE}" == true ]]; then
         if [[ ! -d "${webroot}" ]]; then
@@ -1895,8 +1900,14 @@ installPihole() {
             # Set the owner and permissions
             chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} ${webroot}
             chmod 0775 ${webroot}
+            # Repair permissions if /var/www/html is not world readable
+            chmod a+rx /var/www
+            chmod a+rx /var/www/html
             # Give pihole access to the Web server group
             usermod -a -G ${LIGHTTPD_GROUP} pihole
+            # Give lighttpd access to the pihole group so the web interface can
+            # manage the gravity.db database
+            usermod -a -G pihole ${LIGHTTPD_USER}
             # If the lighttpd command is executable,
             if is_command lighty-enable-mod ; then
                 # enable fastcgi and fastcgi-php
@@ -1957,7 +1968,7 @@ checkSelinux() {
         # If it's enforcing,
         if [[ "${enforceMode}" == "Enforcing" ]]; then
             # Explain Pi-hole does not support it yet
-            whiptail --defaultno --title "SELinux Enforcing Detected" --yesno "SELinux is being ENFORCED on your system! \\n\\nPi-hole currently does not support SELinux, but you may still continue with the installation.\\n\\nNote: Web Admin will not be fully functional unless you set your policies correctly\\n\\nContinue installing Pi-hole?" ${r} ${c} || \
+            whiptail --defaultno --title "SELinux Enforcing Detected" --yesno "SELinux is being ENFORCED on your system! \\n\\nPi-hole currently does not support SELinux, but you may still continue with the installation.\\n\\nNote: Web Admin will not be fully functional unless you set your policies correctly\\n\\nContinue installing Pi-hole?" "${r}" "${c}" || \
             { printf "\\n  %bSELinux Enforcing detected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
             printf "  %b Continuing installation with SELinux Enforcing\\n" "${INFO}"
             printf "      %b Please refer to official SELinux documentation to create a custom policy\\n" "${INFO}"
@@ -1996,7 +2007,7 @@ If you set a new IP address, you should restart the Pi.
 
 The install log is in /etc/pihole.
 
-${additional}" ${r} ${c}
+${additional}" "${r}" "${c}"
 }
 
 update_dialogs() {
@@ -2017,7 +2028,7 @@ update_dialogs() {
     opt2b="This will reset your Pi-hole and allow you to enter new settings."
 
     # Display the information to the user
-    UpdateCmd=$(whiptail --title "Existing Install Detected!" --menu "\\n\\nWe have detected an existing install.\\n\\nPlease choose from the following options: \\n($strAdd)" ${r} ${c} 2 \
+    UpdateCmd=$(whiptail --title "Existing Install Detected!" --menu "\\n\\nWe have detected an existing install.\\n\\nPlease choose from the following options: \\n($strAdd)" "${r}" "${c}" 2 \
     "${opt1a}"  "${opt1b}" \
     "${opt2a}"  "${opt2b}" 3>&2 2>&1 1>&3) || \
     { printf "  %bCancel was selected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
@@ -2106,6 +2117,8 @@ checkout_pull_branch() {
     printf "  %b %s" "${INFO}" "$str"
     git checkout "${branch}" --quiet || return 1
     printf "%b  %b %s\\n" "${OVER}" "${TICK}" "$str"
+    # Data in the repositories is public anyway so we can make it readable by everyone (+r to keep executable permission if already set by git)
+    chmod -R a+rX "${directory}"
 
     git_pull=$(git pull || return 1)
 
@@ -2202,6 +2215,8 @@ FTLinstall() {
 
             # Before stopping FTL, we download the macvendor database
             curl -sSL "https://ftl.pi-hole.net/macvendor.db" -o "${PI_HOLE_CONFIG_DIR}/macvendor.db" || true
+            chmod 644 "${PI_HOLE_CONFIG_DIR}/macvendor.db"
+            chown pihole:pihole "${PI_HOLE_CONFIG_DIR}/macvendor.db"
 
             # Stop pihole-FTL service if available
             stop_service pihole-FTL &> /dev/null
@@ -2252,6 +2267,7 @@ disable_dnsmasq() {
     fi
     # Create /etc/dnsmasq.conf
     echo "conf-dir=/etc/dnsmasq.d" > "${conffile}"
+    chmod 644 "${conffile}"
 }
 
 get_binary_name() {
@@ -2441,6 +2457,7 @@ copy_to_install_log() {
     # Copy the contents of file descriptor 3 into the install log
     # Since we use color codes such as '\e[1;33m', they should be removed
     sed 's/\[[0-9;]\{1,5\}m//g' < /proc/$$/fd/3 > "${installLogLoc}"
+    chmod 644 "${installLogLoc}"
 }
 
 main() {
@@ -2525,7 +2542,7 @@ main() {
         # Display welcome dialogs
         welcomeDialogs
         # Create directory for Pi-hole storage
-        mkdir -p /etc/pihole/
+        install -d -m 755 /etc/pihole/
         # Determine available interfaces
         get_available_interfaces
         # Find interfaces and let the user choose one
@@ -2547,7 +2564,7 @@ main() {
         installDefaultBlocklists
 
         # Source ${setupVars} to use predefined user variables in the functions
-        source ${setupVars}
+        source "${setupVars}"
 
         # Get the privacy level if it exists (default is 0)
         if [[ -f "${PI_HOLE_CONFIG_DIR}/pihole-FTL.conf" ]]; then
@@ -2581,6 +2598,8 @@ main() {
     else
         LIGHTTPD_ENABLED=false
     fi
+    # Create the pihole user
+    create_pihole_user
     # Check if FTL is installed - do this early on as FTL is a hard dependency for Pi-hole
     if ! FTLdetect; then
         printf "  %b FTL Engine not installed\\n" "${CROSS}"
@@ -2602,7 +2621,7 @@ main() {
             pw=$(tr -dc _A-Z-a-z-0-9 < /dev/urandom | head -c 8)
             # shellcheck disable=SC1091
             . /opt/pihole/webpage.sh
-            echo "WEBPASSWORD=$(HashPassword ${pw})" >> ${setupVars}
+            echo "WEBPASSWORD=$(HashPassword "${pw}")" >> "${setupVars}"
         fi
     fi
 
diff --git a/automated install/uninstall.sh b/automated install/uninstall.sh
index 5cd5b924..2d6837b4 100755
--- a/automated install/uninstall.sh	
+++ b/automated install/uninstall.sh	
@@ -156,7 +156,7 @@ removeNoPurge() {
 
     # Restore Resolved
     if [[ -e /etc/systemd/resolved.conf.orig ]]; then
-        ${SUDO} cp /etc/systemd/resolved.conf.orig /etc/systemd/resolved.conf
+        ${SUDO} cp -p /etc/systemd/resolved.conf.orig /etc/systemd/resolved.conf
         systemctl reload-or-restart systemd-resolved
     fi
 
diff --git a/gravity.sh b/gravity.sh
index cca6279d..b7840056 100755
--- a/gravity.sh
+++ b/gravity.sh
@@ -17,37 +17,35 @@ coltable="/opt/pihole/COL_TABLE"
 source "${coltable}"
 regexconverter="/opt/pihole/wildcard_regex_converter.sh"
 source "${regexconverter}"
+# shellcheck disable=SC1091
+source "/etc/.pihole/advanced/Scripts/database_migration/gravity-db.sh"
 
 basename="pihole"
 PIHOLE_COMMAND="/usr/local/bin/${basename}"
 
 piholeDir="/etc/${basename}"
 
-adListFile="${piholeDir}/adlists.list"
-adListDefault="${piholeDir}/adlists.default"
-
+# Legacy (pre v5.0) list file locations
 whitelistFile="${piholeDir}/whitelist.txt"
 blacklistFile="${piholeDir}/blacklist.txt"
 regexFile="${piholeDir}/regex.list"
+adListFile="${piholeDir}/adlists.list"
 
-adList="${piholeDir}/gravity.list"
-blackList="${piholeDir}/black.list"
 localList="${piholeDir}/local.list"
 VPNList="/etc/openvpn/ipp.txt"
 
+piholeGitDir="/etc/.pihole"
+gravityDBfile="${piholeDir}/gravity.db"
+gravityDBschema="${piholeGitDir}/advanced/Templates/gravity.db.sql"
+optimize_database=false
+
 domainsExtension="domains"
 matterAndLight="${basename}.0.matterandlight.txt"
 parsedMatter="${basename}.1.parsedmatter.txt"
-whitelistMatter="${basename}.2.whitelistmatter.txt"
-accretionDisc="${basename}.3.accretionDisc.txt"
 preEventHorizon="list.preEventHorizon"
 
-skipDownload="false"
-
 resolver="pihole-FTL"
 
-haveSourceUrls=true
-
 # Source setupVars from install script
 setupVars="${piholeDir}/setupVars.conf"
 if [[ -f "${setupVars}" ]];then
@@ -83,26 +81,137 @@ if [[ -r "${piholeDir}/pihole.conf" ]]; then
   echo -e "  ${COL_LIGHT_RED}Ignoring overrides specified within pihole.conf! ${COL_NC}"
 fi
 
-# Determine if Pi-hole blocking is disabled
-# If this is the case, we want to update
-#  gravity.list.bck and black.list.bck instead of
-#  gravity.list and black.list
-detect_pihole_blocking_status() {
-  if [[ "${BLOCKING_ENABLED}" == false ]]; then
-    echo -e "  ${INFO} Pi-hole blocking is disabled"
-    adList="${adList}.bck"
-    blackList="${blackList}.bck"
+# Generate new sqlite3 file from schema template
+generate_gravity_database() {
+  sqlite3 "${gravityDBfile}" < "${gravityDBschema}"
+
+  # Ensure proper permissions are set for the newly created database
+  chown pihole:pihole "${gravityDBfile}"
+  chmod g+w "${piholeDir}" "${gravityDBfile}"
+}
+
+update_gravity_timestamp() {
+  # Update timestamp when the gravity table was last updated successfully
+  output=$( { sqlite3 "${gravityDBfile}" <<< "INSERT OR REPLACE INTO info (property,value) values (\"updated\",cast(strftime('%s', 'now') as int));"; } 2>&1 )
+  status="$?"
+
+  if [[ "${status}" -ne 0 ]]; then
+    echo -e "\\n  ${CROSS} Unable to update gravity timestamp in database ${gravityDBfile}\\n  ${output}"
+  fi
+}
+
+# Import domains from file and store them in the specified database table
+database_table_from_file() {
+  # Define locals
+  local table source backup_path backup_file
+  table="${1}"
+  source="${2}"
+  backup_path="${piholeDir}/migration_backup"
+  backup_file="${backup_path}/$(basename "${2}")"
+
+  # Truncate table
+  output=$( { sqlite3 "${gravityDBfile}" <<< "DELETE FROM ${table};"; } 2>&1 )
+  status="$?"
+
+  if [[ "${status}" -ne 0 ]]; then
+    echo -e "\\n  ${CROSS} Unable to truncate ${table} database ${gravityDBfile}\\n  ${output}"
+    gravity_Cleanup "error"
+  fi
+
+  local tmpFile
+  tmpFile="$(mktemp -p "/tmp" --suffix=".gravity")"
+  local timestamp
+  timestamp="$(date --utc +'%s')"
+  local inputfile
+  if [[ "${table}" == "gravity" ]]; then
+    # No need to modify the input data for the gravity table
+    inputfile="${source}"
   else
-    echo -e "  ${INFO} Pi-hole blocking is enabled"
+    # Apply format for white-, blacklist, regex, and adlist tables
+    # Read file line by line
+    local rowid
+    declare -i rowid
+    rowid=1
+    grep -v '^ *#' < "${source}" | while IFS= read -r domain
+    do
+      # Only add non-empty lines
+      if [[ -n "${domain}" ]]; then
+        if [[ "${table}" == "domain_audit" ]]; then
+          # domain_audit table format (no enable or modified fields)
+          echo "${rowid},\"${domain}\",${timestamp}" >> "${tmpFile}"
+        else
+          # White-, black-, and regexlist format
+          echo "${rowid},\"${domain}\",1,${timestamp},${timestamp},\"Migrated from ${source}\"" >> "${tmpFile}"
+        fi
+        rowid+=1
+      fi
+    done
+    inputfile="${tmpFile}"
   fi
+  # Store domains in database table specified by ${table}
+  # Use printf as .mode and .import need to be on separate lines
+  # see https://unix.stackexchange.com/a/445615/83260
+  output=$( { printf ".timeout 10000\\n.mode csv\\n.import \"%s\" %s\\n" "${inputfile}" "${table}" | sqlite3 "${gravityDBfile}"; } 2>&1 )
+  status="$?"
+
+  if [[ "${status}" -ne 0 ]]; then
+    echo -e "\\n  ${CROSS} Unable to fill table ${table} in database ${gravityDBfile}\\n  ${output}"
+    gravity_Cleanup "error"
+  fi
+
+  # Delete tmpfile
+  rm "${tmpFile}" > /dev/null 2>&1 || \
+      echo -e "  ${CROSS} Unable to remove ${tmpFile}"
+
+  # Move source file to backup directory, create directory if not existing
+  mkdir -p "${backup_path}"
+  mv "${source}" "${backup_file}" 2> /dev/null || \
+      echo -e "  ${CROSS} Unable to backup ${source} to ${backup_path}"
+}
+
+# Migrate pre-v5.0 list files to database-based Pi-hole versions
+migrate_to_database() {
+  # Create database file only if not present
+  if [ ! -e "${gravityDBfile}" ]; then
+    # Create new database file - note that this will be created in version 1
+    echo -e "  ${INFO} Creating new gravity database"
+    generate_gravity_database
+
+    # Migrate list files to new database
+    if [ -e "${adListFile}" ]; then
+      # Store adlist domains in database
+      echo -e "  ${INFO} Migrating content of ${adListFile} into new database"
+      database_table_from_file "adlist" "${adListFile}"
+    fi
+    if [ -e "${blacklistFile}" ]; then
+      # Store blacklisted domains in database
+      echo -e "  ${INFO} Migrating content of ${blacklistFile} into new database"
+      database_table_from_file "blacklist" "${blacklistFile}"
+    fi
+    if [ -e "${whitelistFile}" ]; then
+      # Store whitelisted domains in database
+      echo -e "  ${INFO} Migrating content of ${whitelistFile} into new database"
+      database_table_from_file "whitelist" "${whitelistFile}"
+    fi
+    if [ -e "${regexFile}" ]; then
+      # Store regex domains in database
+      # Important note: We need to add the domains to the "regex" table
+      # as it will only later be renamed to "regex_blacklist"!
+      echo -e "  ${INFO} Migrating content of ${regexFile} into new database"
+      database_table_from_file "regex" "${regexFile}"
+    fi
+  fi
+
+  # Check if gravity database needs to be updated
+  upgrade_gravityDB "${gravityDBfile}" "${piholeDir}"
 }
 
 # Determine if DNS resolution is available before proceeding
 gravity_CheckDNSResolutionAvailable() {
   local lookupDomain="pi.hole"
 
-  # Determine if $localList does not exist
-  if [[ ! -e "${localList}" ]]; then
+  # Determine if $localList does not exist, and ensure it is not empty
+  if [[ ! -e "${localList}" ]] || [[ -s "${localList}" ]]; then
     lookupDomain="raw.githubusercontent.com"
   fi
 
@@ -153,19 +262,13 @@ gravity_CheckDNSResolutionAvailable() {
   gravity_CheckDNSResolutionAvailable
 }
 
-# Retrieve blocklist URLs and parse domains from adlists.list
+# Retrieve blocklist URLs and parse domains from adlist.list
 gravity_GetBlocklistUrls() {
   echo -e "  ${INFO} ${COL_BOLD}Neutrino emissions detected${COL_NC}..."
 
-  if [[ -f "${adListDefault}" ]] && [[ -f "${adListFile}" ]]; then
-    # Remove superceded $adListDefault file
-    rm "${adListDefault}" 2> /dev/null || \
-      echo -e "  ${CROSS} Unable to remove ${adListDefault}"
-  fi
-
-  # Retrieve source URLs from $adListFile
-  # Logic: Remove comments and empty lines
-  mapfile -t sources <<< "$(grep -v -E "^(#|$)" "${adListFile}" 2> /dev/null)"
+  # Retrieve source URLs from gravity database
+  # We source only enabled adlists, sqlite3 stores boolean values as 0 (false) or 1 (true)
+  mapfile -t sources <<< "$(sqlite3 "${gravityDBfile}" "SELECT address FROM vw_adlist;" 2> /dev/null)"
 
   # Parse source domains from $sources
   mapfile -t sourceDomains <<< "$(
@@ -182,11 +285,12 @@ gravity_GetBlocklistUrls() {
 
   if [[ -n "${sources[*]}" ]] && [[ -n "${sourceDomains[*]}" ]]; then
     echo -e "${OVER}  ${TICK} ${str}"
+    return 0
   else
     echo -e "${OVER}  ${CROSS} ${str}"
     echo -e "  ${INFO} No source list found, or it is empty"
     echo ""
-    haveSourceUrls=false
+    return 1
   fi
 }
 
@@ -214,11 +318,9 @@ gravity_SetDownloadOptions() {
       *) cmd_ext="";;
     esac
 
-    if [[ "${skipDownload}" == false ]]; then
-      echo -e "  ${INFO} Target: ${domain} (${url##*/})"
-      gravity_DownloadBlocklistFromUrl "${url}" "${cmd_ext}" "${agent}"
-      echo ""
-    fi
+    echo -e "  ${INFO} Target: ${domain} (${url##*/})"
+    gravity_DownloadBlocklistFromUrl "${url}" "${cmd_ext}" "${agent}"
+    echo ""
   done
   gravity_Blackbody=true
 }
@@ -335,14 +437,17 @@ gravity_ParseFileIntoDomains() {
     # Most of the lists downloaded are already in hosts file format but the spacing/formating is not contigious
     # This helps with that and makes it easier to read
     # It also helps with debugging so each stage of the script can be researched more in depth
-    # Awk -F splits on given IFS, we grab the right hand side (chops trailing #coments and /'s to grab the domain only.
-    # Last awk command takes non-commented lines and if they have 2 fields, take the right field (the domain) and leave
-    # the left (IP address), otherwise grab the single field.
-
-    < ${source} awk -F '#' '{print $1}' | \
-    awk -F '/' '{print $1}' | \
-    awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' | \
-    sed -nr -e 's/\.{2,}/./g' -e '/\./p' >  ${destination}
+    # 1) Remove carriage returns
+    # 2) Convert all characters to lowercase
+    # 3) Remove lines containing "#" or "/"
+    # 4) Remove leading tabs, spaces, etc.
+    # 5) Delete lines not matching domain names
+    < "${source}" tr -d '\r' | \
+    tr '[:upper:]' '[:lower:]' | \
+    sed -r '/(\/|#).*$/d' | \
+    sed -r 's/^.*\s+//g' | \
+    sed -r '/([^\.]+\.)+[^\.]{2,}/!d' >  "${destination}"
+    chmod 644 "${destination}"
     return 0
   fi
 
@@ -374,11 +479,13 @@ gravity_ParseFileIntoDomains() {
       # Print if nonempty
       length { print }
     ' "${source}" 2> /dev/null > "${destination}"
+    chmod 644 "${destination}"
 
     echo -e "${OVER}  ${TICK} Format: URL"
   else
     # Default: Keep hosts/domains file in same format as it was downloaded
     output=$( { mv "${source}" "${destination}"; } 2>&1 )
+    chmod 644 "${destination}"
 
     if [[ ! -e "${destination}" ]]; then
       echo -e "\\n  ${CROSS} Unable to move tmp file to ${piholeDir}
@@ -393,12 +500,11 @@ gravity_ConsolidateDownloadedBlocklists() {
   local str lastLine
 
   str="Consolidating blocklists"
-  if [[ "${haveSourceUrls}" == true ]]; then
-    echo -ne "  ${INFO} ${str}..."
-  fi
+  echo -ne "  ${INFO} ${str}..."
 
   # Empty $matterAndLight if it already exists, otherwise, create it
   : > "${piholeDir}/${matterAndLight}"
+  chmod 644 "${piholeDir}/${matterAndLight}"
 
   # Loop through each *.domains file
   for i in "${activeDomains[@]}"; do
@@ -414,9 +520,8 @@ gravity_ConsolidateDownloadedBlocklists() {
       fi
     fi
   done
-  if [[ "${haveSourceUrls}" == true ]]; then
-    echo -e "${OVER}  ${TICK} ${str}"
-  fi
+  echo -e "${OVER}  ${TICK} ${str}"
+
 }
 
 # Parse consolidated list into (filtered, unique) domains-only format
@@ -424,67 +529,46 @@ gravity_SortAndFilterConsolidatedList() {
   local str num
 
   str="Extracting domains from blocklists"
-  if [[ "${haveSourceUrls}" == true ]]; then
-    echo -ne "  ${INFO} ${str}..."
-  fi
+  echo -ne "  ${INFO} ${str}..."
 
-  # Parse into hosts file
+  # Parse into file
   gravity_ParseFileIntoDomains "${piholeDir}/${matterAndLight}" "${piholeDir}/${parsedMatter}"
 
   # Format $parsedMatter line total as currency
   num=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${parsedMatter}")")
-  if [[ "${haveSourceUrls}" == true ]]; then
-    echo -e "${OVER}  ${TICK} ${str}"
-  fi
-  echo -e "  ${INFO} Number of domains being pulled in by gravity: ${COL_BLUE}${num}${COL_NC}"
 
-  str="Removing duplicate domains"
-  if [[ "${haveSourceUrls}" == true ]]; then
-    echo -ne "  ${INFO} ${str}..."
-  fi
+  echo -e "${OVER}  ${TICK} ${str}"
+  echo -e "  ${INFO} Gravity pulled in ${COL_BLUE}${num}${COL_NC} domains"
 
+  str="Removing duplicate domains"
+  echo -ne "  ${INFO} ${str}..."
   sort -u "${piholeDir}/${parsedMatter}" > "${piholeDir}/${preEventHorizon}"
+  chmod 644 "${piholeDir}/${preEventHorizon}"
+  echo -e "${OVER}  ${TICK} ${str}"
 
-  if [[ "${haveSourceUrls}" == true ]]; then
-    echo -e "${OVER}  ${TICK} ${str}"
-    # Format $preEventHorizon line total as currency
-    num=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${preEventHorizon}")")
-    echo -e "  ${INFO} Number of unique domains trapped in the Event Horizon: ${COL_BLUE}${num}${COL_NC}"
-  fi
-}
-
-# Whitelist user-defined domains
-gravity_Whitelist() {
-  local num str
-
-  if [[ ! -f "${whitelistFile}" ]]; then
-    echo -e "  ${INFO} Nothing to whitelist!"
-    return 0
-  fi
-
-  num=$(wc -l < "${whitelistFile}")
-  str="Number of whitelisted domains: ${num}"
+  # Format $preEventHorizon line total as currency
+  num=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${preEventHorizon}")")
+  str="Storing ${COL_BLUE}${num}${COL_NC} unique blocking domains in database"
   echo -ne "  ${INFO} ${str}..."
-
-  # Print everything from preEventHorizon into whitelistMatter EXCEPT domains in $whitelistFile
-  comm -23 "${piholeDir}/${preEventHorizon}" <(sort "${whitelistFile}") > "${piholeDir}/${whitelistMatter}"
-
-  echo -e "${OVER}  ${INFO} ${str}"
+  database_table_from_file "gravity" "${piholeDir}/${preEventHorizon}"
+  echo -e "${OVER}  ${TICK} ${str}"
 }
 
-# Output count of blacklisted domains and regex filters
-gravity_ShowBlockCount() {
+# Report number of entries in a table
+gravity_Table_Count() {
+  local table="${1}"
+  local str="${2}"
   local num
+  num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM ${table} WHERE enabled = 1;")"
+  echo -e "  ${INFO} Number of ${str}: ${num}"
+}
 
-  if [[ -f "${blacklistFile}" ]]; then
-    num=$(printf "%'.0f" "$(wc -l < "${blacklistFile}")")
-    echo -e "  ${INFO} Number of blacklisted domains: ${num}"
-  fi
-
-  if [[ -f "${regexFile}" ]]; then
-    num=$(grep -cv "^#" "${regexFile}")
-    echo -e "  ${INFO} Number of regex filters: ${num}"
-  fi
+# Output count of blacklisted domains and regex filters
+gravity_ShowCount() {
+  gravity_Table_Count "blacklist" "exact blacklisted domains"
+  gravity_Table_Count "regex_blacklist" "regex blacklist filters"
+  gravity_Table_Count "whitelist" "exact whitelisted domains"
+  gravity_Table_Count "regex_whitelist" "regex whitelist filters"
 }
 
 # Parse list of domains into hosts format
@@ -504,7 +588,7 @@ gravity_ParseDomainsIntoHosts() {
 }
 
 # Create "localhost" entries into hosts format
-gravity_ParseLocalDomains() {
+gravity_generateLocalList() {
   local hostname
 
   if [[ -s "/etc/hostname" ]]; then
@@ -520,6 +604,7 @@ gravity_ParseLocalDomains() {
 
   # Empty $localList if it already exists, otherwise, create it
   : > "${localList}"
+  chmod 644 "${localList}"
 
   gravity_ParseDomainsIntoHosts "${localList}.tmp" "${localList}"
 
@@ -529,40 +614,6 @@ gravity_ParseLocalDomains() {
   fi
 }
 
-# Create primary blacklist entries
-gravity_ParseBlacklistDomains() {
-  local output status
-
-  # Empty $accretionDisc if it already exists, otherwise, create it
-  : > "${piholeDir}/${accretionDisc}"
-
-  if [[ -f "${piholeDir}/${whitelistMatter}" ]]; then
-    mv "${piholeDir}/${whitelistMatter}" "${piholeDir}/${accretionDisc}"
-  else
-    # There was no whitelist file, so use preEventHorizon instead of whitelistMatter.
-    cp "${piholeDir}/${preEventHorizon}" "${piholeDir}/${accretionDisc}"
-  fi
-
-  # Move the file over as /etc/pihole/gravity.list so dnsmasq can use it
-  output=$( { mv "${piholeDir}/${accretionDisc}" "${adList}"; } 2>&1 )
-  status="$?"
-
-  if [[ "${status}" -ne 0 ]]; then
-    echo -e "\\n  ${CROSS} Unable to move ${accretionDisc} from ${piholeDir}\\n  ${output}"
-    gravity_Cleanup "error"
-  fi
-}
-
-# Create user-added blacklist entries
-gravity_ParseUserDomains() {
-  if [[ ! -f "${blacklistFile}" ]]; then
-    return 0
-  fi
-  # Copy the file over as /etc/pihole/black.list so dnsmasq can use it
-  cp "${blacklistFile}" "${blackList}" 2> /dev/null || \
-    echo -e "\\n  ${CROSS} Unable to move ${blacklistFile##*/} to ${piholeDir}"
-}
-
 # Trap Ctrl-C
 gravity_Trap() {
   trap '{ echo -e "\\n\\n  ${INFO} ${COL_LIGHT_RED}User-abort detected${COL_NC}"; gravity_Cleanup "error"; }' INT
@@ -594,6 +645,21 @@ gravity_Cleanup() {
 
   echo -e "${OVER}  ${TICK} ${str}"
 
+  if ${optimize_database} ; then
+    str="Optimizing domains database"
+    echo -ne "  ${INFO} ${str}..."
+    # Run VACUUM command on database to optimize it
+    output=$( { sqlite3 "${gravityDBfile}" "VACUUM;"; } 2>&1 )
+    status="$?"
+
+    if [[ "${status}" -ne 0 ]]; then
+      echo -e "\\n  ${CROSS} Unable to optimize gravity database ${gravityDBfile}\\n  ${output}"
+      error="error"
+    else
+      echo -e "${OVER}  ${TICK} ${str}"
+    fi
+  fi
+
   # Only restart DNS service if offline
   if ! pidof ${resolver} &> /dev/null; then
     "${PIHOLE_COMMAND}" restartdns
@@ -620,17 +686,17 @@ Options:
 for var in "$@"; do
   case "${var}" in
     "-f" | "--force" ) forceDelete=true;;
+    "-o" | "--optimize" ) optimize_database=true;;
     "-h" | "--help" ) helpFunc;;
-    "-sd" | "--skip-download" ) skipDownload=true;;
-    "-b" | "--blacklist-only" ) listType="blacklist";;
-    "-w" | "--whitelist-only" ) listType="whitelist";;
-    "-wild" | "--wildcard-only" ) listType="wildcard"; dnsRestartType="restart";;
   esac
 done
 
 # Trap Ctrl-C
 gravity_Trap
 
+# Move possibly existing legacy files to the gravity database
+migrate_to_database
+
 if [[ "${forceDelete:-}" == true ]]; then
   str="Deleting existing list cache"
   echo -ne "${INFO} ${str}..."
@@ -639,56 +705,26 @@ if [[ "${forceDelete:-}" == true ]]; then
   echo -e "${OVER}  ${TICK} ${str}"
 fi
 
-detect_pihole_blocking_status
-
-# Determine which functions to run
-if [[ "${skipDownload}" == false ]]; then
-  # Gravity needs to download blocklists
-  gravity_CheckDNSResolutionAvailable
-  gravity_GetBlocklistUrls
-  if [[ "${haveSourceUrls}" == true ]]; then
-    gravity_SetDownloadOptions
-  fi
+# Gravity downloads blocklists next
+gravity_CheckDNSResolutionAvailable
+if gravity_GetBlocklistUrls; then
+  gravity_SetDownloadOptions
+  # Build preEventHorizon
   gravity_ConsolidateDownloadedBlocklists
   gravity_SortAndFilterConsolidatedList
-else
-  # Gravity needs to modify Blacklist/Whitelist/Wildcards
-  echo -e "  ${INFO} Using cached Event Horizon list..."
-  numberOf=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${preEventHorizon}")")
-  echo -e "  ${INFO} ${COL_BLUE}${numberOf}${COL_NC} unique domains trapped in the Event Horizon"
 fi
 
-# Perform when downloading blocklists, or modifying the whitelist
-if [[ "${skipDownload}" == false ]] || [[ "${listType}" == "whitelist" ]]; then
-  gravity_Whitelist
-fi
-
-convert_wildcard_to_regex
-gravity_ShowBlockCount
-
-# Perform when downloading blocklists, or modifying the white/blacklist (not wildcards)
-if [[ "${skipDownload}" == false ]] || [[ "${listType}" == *"list" ]]; then
-  str="Parsing domains into hosts format"
-  echo -ne "  ${INFO} ${str}..."
-
-  gravity_ParseUserDomains
-
-  # Perform when downloading blocklists
-  if [[ ! "${listType:-}" == "blacklist" ]]; then
-    gravity_ParseLocalDomains
-    gravity_ParseBlacklistDomains
-  fi
+# Create local.list
+gravity_generateLocalList
+gravity_ShowCount
 
-  echo -e "${OVER}  ${TICK} ${str}"
-
-  gravity_Cleanup
-fi
+update_gravity_timestamp
 
+gravity_Cleanup
 echo ""
 
 # Determine if DNS has been restarted by this instance of gravity
 if [[ -z "${dnsWasOffline:-}" ]]; then
-  # Use "force-reload" when restarting dnsmasq for everything but Wildcards
-  "${PIHOLE_COMMAND}" restartdns "${dnsRestartType:-force-reload}"
+  "${PIHOLE_COMMAND}" restartdns reload
 fi
 "${PIHOLE_COMMAND}" status
diff --git a/manpages/pihole.8 b/manpages/pihole.8
index b3008563..ed012092 100644
--- a/manpages/pihole.8
+++ b/manpages/pihole.8
@@ -66,14 +66,24 @@ Available commands and options:
     Adds or removes specified domain or domains to the blacklist
 .br
 
+\fB--regex, regex\fR [options] [<regex1> <regex2 ...>]
+.br
+    Add or removes specified regex filter to the regex blacklist
+.br
+
+\fB--white-regex\fR [options] [<regex1> <regex2 ...>]
+.br
+    Add or removes specified regex filter to the regex whitelist
+.br
+
 \fB--wild, wildcard\fR [options] [<domain1> <domain2 ...>]
 .br
     Add or removes specified domain to the wildcard blacklist
 .br
 
-\fB--regex, regex\fR [options] [<regex1> <regex2 ...>]
+\fB--white-wild\fR [options] [<domain1> <domain2 ...>]
 .br
-    Add or removes specified regex filter to the regex blacklist
+    Add or removes specified domain to the wildcard whitelist
 .br
 
     (Whitelist/Blacklist manipulation options):
@@ -351,6 +361,12 @@ Switching Pi-hole subsystem branches
 .br
     Switch to core development branch
 .br
+
+\fBpihole arpflush\fR
+.br
+    Flush information stored in Pi-hole's network tables
+.br
+
 .SH "SEE ALSO"
 
 \fBlighttpd\fR(8), \fBpihole-FTL\fR(8)
diff --git a/pihole b/pihole
index d2ff3645..4a358443 100755
--- a/pihole
+++ b/pihole
@@ -10,11 +10,9 @@
 # Please see LICENSE file for your rights under this license.
 
 readonly PI_HOLE_SCRIPT_DIR="/opt/pihole"
-readonly gravitylist="/etc/pihole/gravity.list"
-readonly blacklist="/etc/pihole/black.list"
 
-# setupVars and PI_HOLE_BIN_DIR are not readonly here because in some funcitons (checkout),
-# it might get set again when the installer is sourced. This causes an
+# setupVars and PI_HOLE_BIN_DIR are not readonly here because in some functions (checkout),
+# they might get set again when the installer is sourced. This causes an
 # error due to modifying a readonly variable.
 setupVars="/etc/pihole/setupVars.conf"
 PI_HOLE_BIN_DIR="/usr/local/bin"
@@ -57,6 +55,11 @@ flushFunc() {
   exit 0
 }
 
+arpFunc() {
+  "${PI_HOLE_SCRIPT_DIR}"/piholeARPTable.sh "$@"
+  exit 0
+}
+
 updatePiholeFunc() {
   shift
   "${PI_HOLE_SCRIPT_DIR}"/update.sh "$@"
@@ -145,14 +148,6 @@ Time:
       echo -e "  ${INFO} Blocking already disabled, nothing to do"
       exit 0
     fi
-    if [[ -e "${gravitylist}" ]]; then
-      mv "${gravitylist}" "${gravitylist}.bck"
-      echo "" > "${gravitylist}"
-    fi
-    if [[ -e "${blacklist}" ]]; then
-      mv "${blacklist}" "${blacklist}.bck"
-      echo "" > "${blacklist}"
-    fi
     if [[ $# > 1 ]]; then
       local error=false
       if [[ "${2}" == *"s" ]]; then
@@ -201,12 +196,6 @@ Time:
     echo -e "  ${INFO} Enabling blocking"
     local str="Pi-hole Enabled"
 
-    if [[ -e "${gravitylist}.bck" ]]; then
-      mv "${gravitylist}.bck" "${gravitylist}"
-    fi
-    if [[ -e "${blacklist}.bck" ]]; then
-      mv "${blacklist}.bck" "${blacklist}"
-    fi
     sed -i "/BLOCKING_ENABLED=/d" "${setupVars}"
     echo "BLOCKING_ENABLED=true" >> "${setupVars}"
   fi
@@ -310,7 +299,7 @@ tailFunc() {
   # Colour everything else as gray
   tail -f /var/log/pihole.log | sed -E \
     -e "s,($(date +'%b %d ')| dnsmasq[.*[0-9]]),,g" \
-    -e "s,(.*(gravity.list|black.list|regex.list| config ).* is (0.0.0.0|::|NXDOMAIN|${IPV4_ADDRESS%/*}|${IPV6_ADDRESS:-NULL}).*),${COL_RED}&${COL_NC}," \
+    -e "s,(.*(gravity |black |regex | config ).* is (0.0.0.0|::|NXDOMAIN|${IPV4_ADDRESS%/*}|${IPV6_ADDRESS:-NULL}).*),${COL_RED}&${COL_NC}," \
     -e "s,.*(query\\[A|DHCP).*,${COL_NC}&${COL_NC}," \
     -e "s,.*,${COL_GRAY}&${COL_NC},"
   exit 0
@@ -383,8 +372,10 @@ Add '-h' after specific commands for more information on usage
 Whitelist/Blacklist Options:
   -w, whitelist       Whitelist domain(s)
   -b, blacklist       Blacklist domain(s)
-  --wild, wildcard     Wildcard blacklist domain(s)
-  --regex, regex       Regex blacklist domains(s)
+  --regex, regex      Regex blacklist domains(s)
+  --white-regex       Regex whitelist domains(s)
+  --wild, wildcard    Wildcard blacklist domain(s)
+  --white-wild        Wildcard whitelist domain(s)
                         Add '-h' for more info on whitelist/blacklist usage
 
 Debugging Options:
@@ -416,7 +407,8 @@ Options:
                         Add '-h' for more info on disable usage
   restartdns          Restart Pi-hole subsystems
   checkout            Switch Pi-hole subsystems to a different Github branch
-                        Add '-h' for more info on checkout usage";
+                        Add '-h' for more info on checkout usage
+  arpflush            Flush information stored in Pi-hole's network tables";
   exit 0
 }
 
@@ -443,8 +435,10 @@ fi
 case "${1}" in
   "-w" | "whitelist"            ) listFunc "$@";;
   "-b" | "blacklist"            ) listFunc "$@";;
-  "--wild" | "wildcard"          ) listFunc "$@";;
-  "--regex" | "regex"            ) listFunc "$@";;
+  "--wild" | "wildcard"         ) listFunc "$@";;
+  "--regex" | "regex"           ) listFunc "$@";;
+  "--white-regex" | "white-regex" ) listFunc "$@";;
+  "--white-wild" | "white-wild"   ) listFunc "$@";;
   "-d" | "debug"                ) debugFunc "$@";;
   "-f" | "flush"                ) flushFunc "$@";;
   "-up" | "updatePihole"        ) updatePiholeFunc "$@";;
@@ -465,5 +459,6 @@ case "${1}" in
   "checkout"                    ) piholeCheckoutFunc "$@";;
   "tricorder"                   ) tricorderFunc;;
   "updatechecker"               ) updateCheckFunc "$@";;
+  "arpflush"                    ) arpFunc "$@";;
   *                             ) helpFunc;;
 esac
diff --git a/test/test_automated_install.py b/test/test_automated_install.py
index be8fdcfa..e8a4dede 100644
--- a/test/test_automated_install.py
+++ b/test/test_automated_install.py
@@ -338,7 +338,7 @@ def test_installPiholeWeb_fresh_install_no_errors(Pihole):
     expected_stdout = tick_box + (' Creating directory for blocking page, '
                                   'and copying files')
     assert expected_stdout in installWeb.stdout
-    expected_stdout = cross_box + ' Backing up index.lighttpd.html'
+    expected_stdout = info_box + ' Backing up index.lighttpd.html'
     assert expected_stdout in installWeb.stdout
     expected_stdout = ('No default index.lighttpd.html file found... '
                        'not backing up')
@@ -398,6 +398,7 @@ def test_FTL_detect_aarch64_no_errors(Pihole):
     )
     detectPlatform = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLdetect
     ''')
     expected_stdout = info_box + ' FTL Checks...'
@@ -418,6 +419,7 @@ def test_FTL_detect_armv6l_no_errors(Pihole):
     mock_command('ldd', {'/bin/ls': ('/lib/ld-linux-armhf.so.3', '0')}, Pihole)
     detectPlatform = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLdetect
     ''')
     expected_stdout = info_box + ' FTL Checks...'
@@ -439,6 +441,7 @@ def test_FTL_detect_armv7l_no_errors(Pihole):
     mock_command('ldd', {'/bin/ls': ('/lib/ld-linux-armhf.so.3', '0')}, Pihole)
     detectPlatform = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLdetect
     ''')
     expected_stdout = info_box + ' FTL Checks...'
@@ -455,6 +458,7 @@ def test_FTL_detect_x86_64_no_errors(Pihole):
     '''
     detectPlatform = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLdetect
     ''')
     expected_stdout = info_box + ' FTL Checks...'
@@ -471,6 +475,7 @@ def test_FTL_detect_unknown_no_errors(Pihole):
     mock_command('uname', {'-m': ('mips', '0')}, Pihole)
     detectPlatform = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLdetect
     ''')
     expected_stdout = 'Not able to detect architecture (unknown: mips)'
@@ -491,6 +496,7 @@ def test_FTL_download_aarch64_no_errors(Pihole):
     download_binary = Pihole.run('''
     source /opt/pihole/basic-install.sh
     binary="pihole-FTL-aarch64-linux-gnu"
+    create_pihole_user
     FTLinstall
     ''')
     expected_stdout = tick_box + ' Downloading and Installing FTL'
@@ -512,6 +518,7 @@ def test_FTL_download_unknown_fails_no_errors(Pihole):
     download_binary = Pihole.run('''
     source /opt/pihole/basic-install.sh
     binary="pihole-FTL-mips"
+    create_pihole_user
     FTLinstall
     ''')
     expected_stdout = cross_box + ' Downloading and Installing FTL'
@@ -535,6 +542,7 @@ def test_FTL_download_binary_unset_no_errors(Pihole):
     ''')
     download_binary = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLinstall
     ''')
     expected_stdout = cross_box + ' Downloading and Installing FTL'
@@ -551,6 +559,7 @@ def test_FTL_binary_installed_and_responsive_no_errors(Pihole):
     '''
     installed_binary = Pihole.run('''
     source /opt/pihole/basic-install.sh
+    create_pihole_user
     FTLdetect
     pihole-FTL version
     ''')
@@ -691,3 +700,42 @@ def test_IPv6_ULA_GUA_test(Pihole):
     ''')
     expected_stdout = 'Found IPv6 ULA address, using it for blocking IPv6 ads'
     assert expected_stdout in detectPlatform.stdout
+
+
+def test_validate_ip_valid(Pihole):
+    '''
+    Given a valid IP address, valid_ip returns success
+    '''
+
+    output = Pihole.run('''
+    source /opt/pihole/basic-install.sh
+    valid_ip "192.168.1.1"
+    ''')
+
+    assert output.rc == 0
+
+
+def test_validate_ip_invalid_octet(Pihole):
+    '''
+    Given an invalid IP address (large octet), valid_ip returns an error
+    '''
+
+    output = Pihole.run('''
+    source /opt/pihole/basic-install.sh
+    valid_ip "1092.168.1.1"
+    ''')
+
+    assert output.rc == 1
+
+
+def test_validate_ip_invalid_letters(Pihole):
+    '''
+    Given an invalid IP address (contains letters), valid_ip returns an error
+    '''
+
+    output = Pihole.run('''
+    source /opt/pihole/basic-install.sh
+    valid_ip "not an IP"
+    ''')
+
+    assert output.rc == 1