Researchers have discovered a vulnerability that could allow threat actors to fingerprint Firefox and Tor users.

Firefox 150 enhances split view, tab sharing, and other helpful features and patches 271 security vulnerabilities - update now.

Firefox 150 adds page reordering, exporting, and image saving to its built-in PDF viewer, plus split-view improvements and ...

Mozilla has attracted kudos since it added a free built-in VPN to its Firefox web browser, not least because of the generous ...

Firefox 150 ships 271 bug fixes found by Claude Mythos Preview. Mozilla says the defects are finite. The UK AI Security Institute says the model can also attack autonomously.

I spoke with Firefox's head, Ajit Varma, about why the company is returning to fundamentals after years of decline.

The FOSS outfit on Tuesday reminded readers that it used Anthropic’s Opus 4.6 model to look for bugs in Firefox 148 and found ...

Firefox has begun using an advanced AI model, Claude Mythos, to identify and fix security vulnerabilities in its browser, successfully resolving as many as 271 flaws and marking a significant shift in ...

Firefox 150 is out, along with its messaging client sibling Thunderbird 150. Both have multiple small but welcome ...

The Firefox team doesn’t think emerging AI capabilities will upend cybersecurity long term, but they warn that software ...

Mozilla says Anthropic’s new cybersecurity-focused Claude Mythos AI model has discovered 271 vulnerabilities in Firefox.

Anthropic’s powerful Claude Mythos AI model found hundreds of vulnerabilities in Mozilla Firefox, highlighting its ...