Mythos helps Firefox squash 271 bugs

Mythos looks less like a flashy model demo and more like a forcing function for every serious codebase with old attack surface.

• –Firefox is a hardened, heavily fuzzed browser, so 271 findings show how much source-level reasoning still sits outside traditional automated testing
• –The bottleneck shifts from finding bugs to triaging, validating, fixing, and shipping patches fast enough
• –Open source maintainers may be hit hardest because the most exposed projects often have the least staff to process AI-generated vulnerability floods
• –Anthropic’s private rollout buys defenders time, but it also highlights an access gap between large platform teams and smaller projects
• –For developers, this makes security automation a near-term SDLC requirement, not a future research curiosity