™How Mozilla strengthens Firefox security with GPT-6 Cyber (0:53)
A 53-second OpenAI short: Mozilla Firefox engineer Brian Grinstead describes how GPT-6 Cyber found previously unknown high-severity vulnerabilities in early testing, and how reproducible test cases and fixed patches helped ship fixes to millions of users.
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Brian Grinstead introduces himself as a Distinguished Engineer at Mozilla working on Firefox; protecting Firefox users is core to Mozilla's mission.
Firefox entered 2026 as one of the world's most hardened and scrutinized code bases, so remaining bugs are subtle and hard to find; AI gives engineers new tools to find and fix them.
In early testing, GPT-6 Cyber identified vulnerabilities, worked efficiently, and uncovered opportunities to further harden layered defenses.
Reproducible test cases and fixed patches helped engineers land fixes quickly and get them out to users.
Closing: the tools help find and fix security bugs and ship those fixes to millions of users.
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