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blog.mozilla.org

Mozilla Security Blog

Get the latest updates from Mozilla Security Blog directly as they happen.

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Latest posts

Last updated 20 days ago

Behind the Scenes: Fixing an In-the-Wild Firefox Exploit

20 days ago

At Mozilla, browser security is a critical mission, and part of that...

Firefox will upgrade more Mixed Content in Version 127

5 months ago

Most of the web already supports HTTPS: In fact, 93% of requests...

Rapidly Leveling up Firefox Security

7 months ago

At Mozilla, we believe in an open web that is safe to...

Mozilla VPN Security Audit 2023

11 months ago

To provide transparency into our ongoing efforts to protect your privacy and...

Version 2.9 of the Mozilla Root Store Policy

about 1 year ago

Online security is constantly evolving, and thus we are excited to announce...

Updated GPG key for signing Firefox Releases

over 1 year ago

The GPG key used to sign the Firefox release manifests is expiring...

Upgrading Mozilla’s Root Store Policy to Version 2.8

over 2 years ago

In accordance with the Mozilla Manifesto, which emphasizes the open development of...

Revocation Reason Codes for TLS Server Certificates

over 2 years ago

In our continued efforts to improve the security of the web PKI...

Preventing secrets from leaking through Clipboard

almost 3 years ago

  For decades users have been pressing Ctrl+C or relying on copy buttons...

Improving the Quality of Publicly Trusted Intermediate CA Certificates with Enhanced Oversight and Automation

almost 3 years ago

In keeping with our commitment to the security and privacy of individuals...

Securing the proxy API for Firefox add-ons

about 3 years ago

Overview Add-ons are a powerful way to extend and customize Firefox. At...

Firefox 93 features an improved SmartBlock and new Referrer Tracking Protections

about 3 years ago

We are happy to announce that the Firefox 93 release brings two...