Mozilla Security Blog

Firefox 93 protects against Insecure Downloads

  Downloading files on your device still exposes a major security risk and can ultimately lead to an entire system compromise by an attacker. Especially because the security risks are … Read more

Mozilla VPN Security Audit

To provide transparency into our ongoing efforts to protect your privacy and security on the Internet, we are releasing a security audit of Mozilla VPN that Cure53 conducted earlier this … Read more

Firefox 91 Introduces Enhanced Cookie Clearing

We are pleased to announce a new, major privacy enhancement to Firefox’s cookie handling that lets you fully erase your browser history for any website. Today’s new version of Firefox … Read more

Stopping FTP support in Firefox 90

  The File Transfer Protocol (FTP) has long been a convenient file exchange mechanism between computers on a network. While this standard protocol has been supported in all major browsers … Read more

Firefox 90 supports Fetch Metadata Request Headers

  We are pleased to announce that Firefox 90 will support Fetch Metadata Request Headers which allows web applications to protect themselves and their users against various cross-origin threats like … Read more

Updating GPG key for signing Firefox Releases

Mozilla offers GPG signing to let you verify the integrity of our Firefox builds. GPG signatures for Linux based builds are particularly important, because it allows Linux distributions and other … Read more