Security researchers at Mozilla say Anthropic's Mythos has unearthed a wealth of high-severity bugs in Firefox.

Unlike previous vulnerability disclosure slop, Grinstead said, the details provided by its harness-guided Mythos analysis, ...

The Firefox team doesn’t think emerging AI capabilities will upend cybersecurity long term, but they warn that software developers are likely in for a rocky transition.

Mozilla: > Ordinarily we keep detailed bug reports private for several months after shipping fixes and issuing security advisories, largely as a precaution to protect any users who, for whatever ...

For years, getting any kind of meaningful VPN protection meant signing up for a paid service or fumbling with sketchy free ...

Mozilla says Firefox 150 patches 271 vulnerabilities found with Anthropic’s restricted Mythos AI, highlighting how quickly AI ...

Yet it remains unclear if Anthropic's uber model was effective, or if better model middleware is what makes the difference ...

So, yes, there is code for an ad-blocker in the last two versions of Firefox, but it’s off by default, and there’s no user ...

I interviewed Ajit Varma, the head of Firefox, and he made a clear case for why you should use Firefox: "Build better ...

Anthropic's Mythos model, unveiled in April 2026, has transformed Firefox's cybersecurity by identifying critical ...

Earlier this month, Anthropic said its Mythos Preview model was so good at finding cybersecurity vulnerabilities that the company was limiting its initial release to “a limited group of critical ...

The vulnerability allowed tracking across sites, even in Private Mode.