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+# Trezor Firmware
+
+## Contribute
+
+Inspired by [GitLab Contributing Guide](https://docs.gitlab.com/ee/development/contributing/)
+
+### Security vulnerability disclosure
+
+Please report suspected security vulnerabilities in private to [mailto:security@satoshilabs.com](mailto:security@satoshilabs.com), also see [the disclosure section on the Trezor.io website](https://trezor.io/security/). Please do NOT create publicly viewable issues for suspected security vulnerabilities.
+
+### Issue Labels
+
+#### Priority
+
+Label     | Meaning (SLA)
+----------|--------------
+P1 Urgent | The current release + potentially immediate hotfix (30 days)
+P2 High   | The next release (60 days)
+P3 Medium | Within the next 3 releases (90 days)
+P4 Low    | Anything outside the next 3 releases (120 days)
+
+#### Severity
+
+Label       | Impact
+------------|-------
+S1 Blocker  | Outage, broken feature with no workaround
+S2 Critical | Broken feature, workaround too complex & unacceptable
+S3 Major    | Broken feature, workaround acceptable
+S4 Low      | Functionality inconvenience or cosmetic issue