A malicious campaign dubbed 'GreedyBear' has snuck onto the Mozilla add-ons store, targeting Firefox users with 150 malicious extensions and stealing an estimated $1,000,000 from unsuspecting victims.

Firefox Soon Can Reinstall Itself After Windows 11 Upgrades Mozilla has quietly added a smart launcher to Firefox that can reinstall the browser if it vanishes during a Windows 11 upgrade.

Mozilla is testing Mica on Windows 11 in Firefox Nightly, giving the toolbar a modern, translucent look matching Fluent Design.

Mozilla has rolled out an emergency Firefox 139.0.1 update after the Tuesday release caused graphical artifacts on PCs with NVIDIA GPUs.

Mozilla patched 2 Firefox zero-days exploited at Pwn2Own Berlin, risking code execution via JavaScript flaws.

debug A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers.

Firefox 130 allows you to try Firefox Labs, which adds experimental features to the browser. Here's how to try them.