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Mozilla Security Blog
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Latest posts
Last updated 2 months ago
Behind the Scenes: Fixing an In-the-Wild Firefox Exploit
2 months ago
At Mozilla, browser security is a critical mission, and part of that...
Firefox will upgrade more Mixed Content in Version 127
7 months ago
Most of the web already supports HTTPS: In fact, 93% of requests...
Rapidly Leveling up Firefox Security
9 months ago
At Mozilla, we believe in an open web that is safe to...
Mozilla VPN Security Audit 2023
about 1 year ago
To provide transparency into our ongoing efforts to protect your privacy and...
Version 2.9 of the Mozilla Root Store Policy
over 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
about 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
about 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...