Articles in “Firefox”

Deprecating the RC4 Cipher

As part of our commitment to protect the privacy of our users, Mozilla will disable the insecure RC4 cipher in Firefox in late January 2016, beginning with Firefox 44. Mozilla … Read more

Firefox exploit found in the wild

Yesterday morning, August 5, a Firefox user informed us that an advertisement on a news site in Russia was serving a Firefox exploit that searched for sensitive files and uploaded … Read more

Tighter Control Over Your Referrers

The purpose of the HTTP Referer (sic) header is to help sites figure out where their traffic comes from. However, as the Web got more complex, the amount of information … Read more

RSA Signature Forgery in NSS

Issue A flaw in the Network Security Services (NSS) library used by Firefox and other products allows attackers to create forged RSA certificates. Mozilla has released updates to fix this … Read more

Public key pinning released in Firefox

Firefox now supports built-in public key pins, which means that a shortened list of acceptable certificate authorities (CAs) for participating sites is built into Firefox. In this first stage of … Read more

Improving Malware Detection in Firefox

We are always looking for ways to help protect people better from the constant threat of malicious software. For years Firefox has utilized Google’s Safe Browsing phishing and malware protection … Read more

Update on Plugin Activation

To provide a better and safer experience on the Web, we have been working to move Firefox away from plugins. After much testing and iteration, we determined that Firefox would … Read more

A New Focus on Security in the Web Console

Web developers need better tools to help them debug security issues. The Web Console, part of the Firefox Developer Tools, shows errors and warnings filtered into different categories. Firefox 23 … Read more

Investigating Security Vulnerability Report

Update – August 5, 2013 Issue Mozilla was notified on August 4, 2013 of a potential security vulnerability with Firefox 17 (current general release is Firefox 22). Upon investigation we … Read more

Using Coverage Data for Security

We recently started measuring C/C++ code coverage on mozilla-central again and documented the various efforts around it in a new MDN article.