# Firefox and Thunderbird Releases to Use New Signing Key

Mozilla has updated the GPG key used for signing Firefox and Thunderbird releases. Users who verify release signatures should update their keyrings to the new key. This change affects future release verification and security checks.

**Importance:** 2/5

## Sources

### Technology
- [Hacker News](https://blog.mozilla.org/security/2026/08/10/updated-gpg-key-for-signing-firefox-and-thunderbird-releases/) — Tue, 11 Aug 2026 04:04:36 +0000

### Security
- [The Hacker News](https://thehackernews.com/2026/08/mozilla-revokes-firefox-and-thunderbird.html) — Tue, 11 Aug 2026 17:34:51 +0530