Mozilla's built-in VPN offers an extra layer of privacy for your browser traffic without requiring a separate subscription.

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 22 bugs. Mythos found 271 vulnerabilities in Firefox 150. Mozilla CTO Bobby Holley expressed mixed feelings about that result,

With Firefox’s latest version 150 update for Windows, macOS, and Linux, Mozilla has introduced few genuinely new features but some noteworthy improvements. The split view is easier to use, the built-in PDF viewer is increasingly evolving into a PDF editor,

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

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 how software security is managed.

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