The Mozilla Firefox 159 release introduces default sidebar passwords, open tab search shortcuts, Wayland fixes on Linux, and an AI-driven webpage monitor.
firefox
Mozilla launched the Come Back to Firefox campaign, leveraging nostalgic internet memes to promote user privacy and challenge Chrome market dominance.
Mozilla blocked eight keys in the eMudhra certificate compromise via OneCRL in under three hours, then shipped Firefox 158.0.1 and NSS 3.131.1.
Socket found 16 malicious Firefox extensions posing as Rabby and OKX. These crypto wallet stealers grabbed seed phrases. Here is what to do.
Firefox redesign compact mode returns with a modern look, a new theme picker, and one switch to disable all generative AI tools.
Mozilla integrates a native ad blocker into Firefox for iOS. Discover how this new feature utilizes the WebKit engine to filter intrusive advertisements.
Socket tracked 77 malicious Firefox extensions that steal crypto wallet secrets and credentials. See how the Offside Wallet Theft Factory works.
NVIDIA's GeForce NOW now fully supports Firefox on Windows, offering Ultimate subscribers 1440p at 120fps after months of WebRTC and low-latency optimization work.
Firefox for iOS is testing a native, EasyList-powered ad blocker that requires no extensions, though it can't block Google search ads or Firefox's own sponsored content.
Mozilla rotated the Linux GPG signing key for Firefox and Thunderbird after a subkey copy was inadvertently pushed to a private GitHub repository.
Discover how Firefox uBlock Origin support continues despite the MV3 transition. Learn why Edge and Chrome users face ad blocker restrictions soon.
Firefox native containers land in version 153, isolating accounts and cookies so you can block cross-site tracking without any extension.
Firefox's built-in VPN removes its 50GB cap and adds 22 new countries this summer, helping travelers stream and browse securely.
Mozilla used Anthropic’s Claude Mythos to fix 271 Firefox vulnerabilities. Discover how AI is finally flipping the script on the cybersecurity "cost asymmetry."
Mozilla’s "Project NOVA" is a 3D, floating-element reimagining of the Firefox UI. See the leaked wireframes of the biggest browser metamorphosis since 2021.
Public PoC exploit released for critical Firefox WebRTC flaw CVE-2025-14321 (CVSS 9.8). AI-discovered bug allows remote code execution. Update now.
Koi Security unmasks DarkSpectre, a Chinese threat group that used 300+ browser extensions to spy on 8.8M users and steal corporate meeting data.
New CEO Anthony Enzor-DeMeo announces Firefox’s evolution into an "AI browser," offering users a choice of models like ChatGPT and Claude by 2026.
Critical Ray AI flaw (CVE-2025-62593) allows RCE via DNS rebinding on Safari & Firefox. Chrome is immune. Update to Ray v2.52.0 immediately.
After removing JPEG-XL support in 2023, Chromium has reopened the debate on reinstating the format, driven by Apple's recent adoption in Safari and the iPhone 16 Pro.
Mozilla unveiled Kit, a new friendly fox mascot, to represent the Firefox brand's commitment to user privacy. It will appear across new tab pages and branding.
Starting Nov 3, all new Firefox extensions must explicitly declare whether they collect user data. By mid-2026, this disclosure will be mandatory for all add-ons.