Mozilla

Claude Mythos Has Found 271 Zero-Days in Firefox

Claude Mythos discovered 271 zero-day vulnerabilities in Firefox, demonstrating frontier AI's ability to identify latent security flaws at scale.

A quick look at Mythos run on Firefox: too much hype?

Analysis reveals Anthropic's Mythos found real Firefox bugs but the "271 vulnerabilities" figure misleadingly conflates commits of varying severity, overstating the tool's offensive research capability.

Microsoft gives your Word documents an AI co-author you didn’t ask for

Microsoft embeds autonomous Copilot agents across Word, Excel, and PowerPoint that directly modify documents and spreadsheets, generating criticism over forced integration and autonomous AI actions users didn't request.

We Found a Stable Firefox Identifier Linking All Your Private Tor Identities

Firefox's IndexedDB implementation leaks a stable identifier that persists across Tor Browser's "New Identity" resets, allowing sites to link private browsing sessions until the fix in Firefox 150.

Thunderbird in hand worth 2 Outlooks as fresh FOSS fave and Firefox arrive

Firefox 150 and Thunderbird 150 advance Mozilla's privacy-first alternatives to Chrome and Outlook with encrypted search, local network security, and improved PDF tooling.