Firefox extensions expand the functionality of the browser with new features not available in the default program. Below are the best Firefox add-ons (aka extensions) that cover security and privacy, ...

Brendan is a freelance writer and content creator from Portland, OR. He covers tech and gaming for Lifehacker, and has also written for Digital Trends, EGM, Business Insider, IGN, and more. If your ...

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 ...

At 12:00 a.m. UTC (Coordinated Universal Time, formerly Greenwich Mean Time) today, many Firefox users found themselves browsing with their usual extensions. But as clock ran over to midnight, a code ...

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 ...

Firefox is one of the towering achievements of the open-source movement, accounting for almost a quarter of all Web site visits just five years after its launch. One of the reasons for its enormous ...