diff --git a/ch05_wallets.adoc b/ch05_wallets.adoc
index 7a2ddc54..da58fbd8 100644
--- a/ch05_wallets.adoc
+++ b/ch05_wallets.adoc
@@ -1368,10 +1368,7 @@ of public keys from an xpub is very useful, but it comes with a
 potential risk. Access to an xpub does not give access to child private
 keys. However, because the xpub contains the chain code, if a child
 private key is known, or somehow leaked, it can be used with the chain
-code to derive all the other child private keys. A single leaked child
-private key, together with a parent chain code, reveals all the private
-keys of all the children. Worse, the child private key together with a
-parent chain code can be used to deduce the parent private key.
+code to derive all the other child private keys. A single leaked child private key, together with a parent chain code, can be used to deduce the parent private key. As a result, all of the child private keys of the parent are compromised.
 
 To counter this risk, HD wallets provide an alternative derivation function
 called _hardened derivation_, which breaks the relationship between
diff --git a/meta/github_contrib.adoc b/meta/github_contrib.adoc
index 6bb33810..ff55bd57 100644
--- a/meta/github_contrib.adoc
+++ b/meta/github_contrib.adoc
@@ -168,6 +168,7 @@
 <li>Thiago Arrais (thiagoarrais)</li>
 <li>Thomas Kerin (afk11)</li>
 <li>Tochi Obudulu (tochicool)</li>
+<li>Tony Lu (tlulu)</li>
 <li>Tosin (tkuye)</li>
 <li>Vasil Dimov (vasild)</li>
 <li>venzen</li>