Mozilla Used Anthropic's Mythos to Find and Fix 271 Bugs in Firefox

https://www.wired.com/story/mozilla-used-anthropics-mythos-to-find-271-bugs-in-firefox/

Article

  • Anthropic’s Mythos system found 271 bugs in Firefox for Mozilla
  • Positioned as AI-assisted security auditing at scale
  • Mozilla agrees the flood of bugs is transitory; expects net-positive security outcome

Discussion

  • Commenters note it’s unclear if LLM also wrote the fixes, or just found bugs
  • Anthropic’s choice of Firefox (massive blast radius) seen as deliberate credibility signal
  • One quip: ‘nobody uses Firefox’ — though hundreds of millions still do

Discuss on HN


Type Link
Added Apr 22, 2026
Modified Apr 22, 2026