Mozilla says Claude AI uncovered over 100 Firefox bugs in just two weeks, including 1

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Apparently AI can accelerate both attacks and defenses in computer security
 
The takeaway: While some companies are struggling with a flood of unreliable or hallucinated AI-generated bug reports, Mozilla is finding real value in bug-seeking bots. The foundation has begun working with Anthropic to strengthen Firefox's security, and several AI-assisted bug fixes have already landed in the browser's codebase.
 
Mozilla is now working with Anthropic's Frontier Red Team to identify and patch potentially dangerous security vulnerabilities in Firefox. According to Mozilla, the AI company approached them a few weeks ago with results from a newly developed, AI-assisted bug-hunting method. The approach appears to work, Mozilla said, and could ultimately lead to a safer Firefox experience for everyone.
 
Anthropic's team focused on Firefox's JavaScript engine, in part because the Red Panda browser offers a widely used and "deeply scrutinized" open-source codebase that makes it ideal for testing new analysis techniques. The AI system uncovered several security flaws in the JS engine and also produced minimal test cases, allowing Firefox developers to quickly verify and reproduce the issues.

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