Firefox privacy, security and anti-tracking: a comprehensive user.js template for configuration and hardening
Keeping Data Private | Web Browser Engineering
Our browser has grown up and now runs (small) web applications. With one final step—user identity via cookies—it will be able to run all sorts of personalized online services. But capability demands responsibility: our browser must now secure cookies against adversaries interested in stealing them. Luckily, browsers have sophisticated systems for controlling access to cookies and preventing their misuse.
FOSDEM 2025 - The Firefox AI Platform
Learn how the privacy-preserving local inference runtime works in Firefox Desktop, our current use cases and how to create your own features using the Experimental Web Extension API.
Which browsers are best for privacy?
An open-source privacy audit of popular web browsers.
Antidetect Browser for Managing Multiple Accounts Safely | Gologin
Create and run multiple accounts on any platform without bans. Gologin antidetect browser helps you manage unlimited profiles safely with unique digital fingerprints.⚡️7-Days Trial!
The web should remain anonymous by default | The Mozilla Blog
The unique architecture of the web enables a much higher degree of user privacy than exists on other platforms. Many factors contribute to this, but an ess
What is it? - NoScript: consensual browsing!
The NoScript Security Suite is Free Software protecting Firefox (on Android, too!), Chrome, Edge, Brave and other web browsers. Install NoScript now!
LibreWolf Browser
A custom version of Firefox, focused on privacy, security and freedom.
Award-winning security research reveals a host of never-seen, currently unblockable web-tracking techniques
Who Left Open the Cookie Jar? A Comprehensive Evaluation of Third-Party Cookie Policies won the Distinguished Paper prize at this year's Usenix Security Conference; its authors, researchers at Belgium's Catholic…
A cartoon intro to DNS over HTTPS – Mozilla Hacks - the Web developer blog
At Mozilla, we closely track threats to users' privacy and security. This is why we've added tracking protection to Firefox and created the Facebook container extension. In today's cartoon intro, ...
Behind the Scenes Hardening Firefox with Claude Mythos Preview – Mozilla Hacks - the Web developer blog
New details about what we found, and how agentic harnesses are now able to reproduce real bugs and dismiss false positives.
Introducing a terms of use and updated privacy notice for Firefox | The Mozilla Blog
UPDATE: We’ve seen a little confusion about the language regarding licenses, so we want to clear that up. We need a license to allow us to make some of t
Make the Web Work For Everyone – Mozilla Hacks - the Web developer blog
Updated 2016/07/22: Commenters found a few data errors (thanks!) which have now been corrected. Millions of websites have compatibility problems on one or more of the major browsers, leading to ...
WebAppSec/Secure Coding Guidelines - MozillaWiki
The purpose of this page is to establish a concise and consistent approach to secure application development of Mozilla web applications and web services. The information provided here will be focused towards web based applications; however, the concepts can be universally applied to applications to implement sound security controls and design.
Potential uses for the Privacy Sandbox
Today on The Keyword, we outlined our vision for an initiative aimed at evolving the web with architecture that advances privacy, while co...
Firefox: The fast, private browser that keeps you safe
The independent browser that has your back. Firefox blocks trackers, has a free built-in VPN, puts you in control of AI, and never sells your personal data.
