ToolsThe story, in brief
Mozilla's agentic AI pipeline turns Claude Mythos Preview loose and finds 271 unknown Firefox vulnerabilities
271 vulnerabilities. That's what Claude Mythos Preview found in Firefox 150 — some lurking for 20 years. Mozilla's now running agentic AI on every code commit.
The KeyNews take
Why it matters
Mozilla deployed an agentic AI pipeline into production security workflows, moving beyond research into operational bug-finding at scale. This signals how enterprises are embedding AI agents into critical software delivery processes.
The key facts
5 to knowClaude Mythos Preview discovered 271 previously unknown Firefox 150 vulnerabilities
Vulnerabilities include bugs dormant for up to 20 years
Agentic pipeline builds and runs its own test cases to filter false positives
Mozilla implementing automatic code checks before commit for all new code
Deployment date: May 8, 2026
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: Anthropic's Claude Mythos Preview uncovered 271 previously unknown security vulnerabilities in Firefox 150, including bugs up to 20 years old. Mozilla describes an agentic pipeline where the AI builds and runs its own test cases to filter out false positives. Going forward, every new piece of code…