Introducing Mozilla Winter of Security 2014

At Mozilla, we have a loosely formed group called Security Automation, where people who build security tools can meet, exchange ideas, and show their work. We build projects around applications … Read more

Hack in the Box HackWeekDay 2014

The Mozilla security team is proud to be once again sponsoring the Hack-in-the-Box HackWeekDay competition, this time at the Haxpo conference in Amsterdam, 28-30 May 2014. Come learn about Firefox … Read more

Heartbleed Security Advisory

Issue OpenSSL is a widely-used cryptographic library which implements the TLS protocol and protects communications on the Internet. On April 7, 2014, a bug in OpenSSL known as “Heartbleed” was … Read more

Using FuzzDB for Testing Website Security

After posting an introduction to FuzzDB I received the suggestion to write more detailed walkthroughs of the data files and how they could be used during black-box web application penetration … 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

On the X-Frame-Options Security Header

A few weeks ago, Mario Heiderich and I published a white paper about the X-Frame-Options security header. In this blog post, I want to summarize the key arguments for settings … Read more