Mozilla Used Anthropic’s Mythos to Find and Fix 271 Bugs in Firefox
Ah, Mozilla — plucky little open-source browser that's had its lunch eaten by Google Chrome so badly it's practically a charcuterie board — has an announcement. It used Anthropic's Mythos Preview to find 271 vulnerabilities in Firefox 150, which the guys who can't keep their own model locked down graciously gave them early access to. Because nothing says 'trust our security credentials' like borrowing the regulator-defying advisor that's already been ransacked by unauthorised users. 271 bugs squashed! That's about as impressive as a landlord fixing 271 cracks in a condemned building — good job, lads, shame about the infestation.
The timing is exquisite. Anthropic is currently fending off multiple cybersecurity investigations regarding the Mythos breach, but they've found a brief PR holiday by loaning their genius code-scanner to an open-source browser that practically nobody under 40 uses as their daily driver. Mozilla boasted that Mythos caught 'critical and high-severity' memory-safety issues that traditional static analysis and fuzzing failed to detect. Translation: a $60bn-valued lab's AI read your C++ and pointed out the obvious segfaults your free tooling missed. Is this advance or a sad indictment of the prior decade of open-source quality assurance?
The two-step is breathtaking. First, Mythos squirts out of control — someone passes it around like a joint at a tech conference. Then, for those of us still using desktop browsers from the before-times, Mozilla emerges like a sainted NHS dentist: 'Mythos Found That!!' The subtext is pure Silicon Valley Kabuki: we can't stop leaking our demigod models, but we *can* get great PR about fixing other people's software with it. Fire is fire whether you're using it to heat the lab or burn down your neighbour's lean-to. Mozilla's triumphant number — 271 — is less an improvement than a snapshot of what's been neglected while we were busy chasing AGI. But go on, Mozilla. Keep patching. We're all laughing, and not in a nice way.