Firefox is built on open-source code, creating an incentive for developers to fork, tinker, and reimagine the browser. This ...

An expired certificate on the Mozilla Add-ons infrastructure is disabling Firefox add-ons for millions of users, and is also preventing users from re-activating or (re-)installing extensions. The ...

In context: Root certificates are an essential element for modern browser security. They protect users by verifying signed web pages, extensions, and other types of content. However, developers must ...

As we’ve mentioned previously, Firefox’s vast library of add-ons makes it easy to build the browser into a productivity juggernaut. We uncovered a few more must-have customizations for improving your ...

The extensions were said to be abusing the browser's proxy API. I've been writing about tech, including everything from privacy and security to consumer electronics and startups, since 2011 for a ...

If your Firefox browser add-ons have suddenly stopped working, are now “unsupported” without any warning, or you can’t install any new ones, don’t worry: Mozilla is aware of these bugs and is working ...

A Sunday afternoon browser update fixed the lapsed certificate, which Mozilla had used to digitally sign Firefox extensions. After the certificate expired, the browser add-ons stopped working. Mozilla ...

Old browser extensions can be a security nightmare. Here's how to nuke the ones you're no longer using. I review privacy tools like hardware security keys, password managers, private messaging apps ...

For the sliver of the market that opts for Firefox instead of Chrome, the default browser on Android devices, the experience just got better. Firefox maker Mozilla announced today the launch of over ...

Firefox users who run extensions on the desktop edition of the browser will soon be able to tap into more of them on the Android version. In a blog post this week, Mozilla announced that more than 400 ...

Editor’s Note: The following article is reprinted from CSO. As strange as it might sound, there are times when I wish for the old days of the Internet circa the early 1990’s. The days of Mosaic and ...

Firefox had an off weekend, but it's trying to get back in working order. Credit: LEON NEAL/AFP/Getty Images After a difficult weekend in which browser extensions stopped working in Firefox, the ...