Mozilla News | TNW

Firefox headquarters in San Francisco, California, USA - June 6, 2023. Mozilla Firefox, or simply Firefox, is a free and open-source web browser.

Mistral and Firefox logos joined by a thin line on a dark grid background, with a pixel-art cat and a small fox illustration.

Photo of Firefox Sign In Mozilla Taiwan Office

Apple

Mozilla adds a built-in ad blocker to Firefox on iOS, built on Apple’s WebKit API

Ana Maria Constantin
Sep 1, 2026

Arthur Mensch - CEO & Co-Founder of Mistral, Henri Delahaye - Co-Founder RAISE, Mark Surman - President of Mozilla

Mozilla

RAISE Summit hit by power outage during keynote with Mozilla president and Mistral CEO

Ana Maria Constantin
Jul 8, 2026

mozilla-firefox-claude-mythos-271-vulnerabilities

Mozilla

Mozilla patched 271 Firefox bugs found by Anthropic’s Mythos, and says the zero-day era has an expiration date

Ana Maria Constantin
Apr 22, 2026

The French government is working on a new law that could threaten the free internet, warns Mozilla

Mozilla

Impending French law threatens the free internet, Mozilla warns

Thomas Macaulay
Aug 22, 2023

Mozilla wants to know if YouTube's actually blocking rejected recommendations — and needs your help

YouTube

Mozilla is investigating YouTube’s recommendation controls — and you can help

Thomas Macaulay
Dec 2, 2021

A new browser add-on called RegretsReporter invites users to report dubious YouTube recommendations so Mozilla can investigate the algorithm pushing them.

YouTube

Mozilla needs your help to expose YouTube’s recommendation algorithm

Thomas Macaulay
Sep 17, 2020

mozilla

Mozilla

Mozilla lays off 250 employees — about 25% of its workforce

Mix
Aug 11, 2020