Anthropic’s Claude Found 22 Vulnerabilities In Firefox Over Two Weeks

Claude AI uncovered 22 Firefox vulnerabilities in just two weeks, including 14 high-severity bugs. Here's what this means for open-source security.
Matilda
Anthropic’s Claude Found 22 Vulnerabilities In Firefox Over Two Weeks
AI-powered security testing just hit a new milestone. In a two-week collaboration with Mozilla, Anthropic's Claude AI discovered 22 separate vulnerabilities inside Firefox — 14 of which were classified as high-severity. Most of those bugs have already been patched in the latest Firefox release, and the security community is paying close attention to what this means for the future of software protection. If you've ever wondered whether AI tools can genuinely improve software security, this story gives you a concrete, real-world answer. What Happened: Claude AI Teams Up With Mozilla to Test Firefox Anthropic and Mozilla recently announced a security partnership aimed at stress-testing one of the world's most widely used open-source browsers. The project wasn't a casual experiment — it was a structured, deliberate attempt to see how well AI could perform as a vulnerability hunter in a notoriously complex codebase. Claude Opus 4.6, one of the most capable models in Anthropic&…