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Featured Articles

Add-on Badges

Add-on Badges

You’ll know if an extension is being regularly reviewed if it has one of the badges listed in this article.

Captive portal detection

Captive portal detection

Page that describes how Firefox detects captive portal networks.

Enhanced Tracking Protection in Firefox for desktop

Enhanced Tracking Protection in Firefox for desktop

Enhanced Tracking Protection in Firefox automatically protects your privacy while you browse.

How to troubleshoot security error codes on secure websites

How to troubleshoot security error codes on secure websites

Learn about the error codes SEC_ERROR_UNKNOWN_ISSUER MOZILLA_PKIX_ERROR_MITM_DETECTED and ERROR_SELF_SIGNED_CERT on HTTPS websites and how to troubleshoot.

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