Firefox Enforces Certificate Transparency, Boosting Web Security
2025-03-01
Firefox is mandating Certificate Transparency (CT) on desktop platforms, a significant advancement in web security. Starting with version 135, Firefox will reject certificates not meeting CT requirements, ensuring high transparency standards for all trusted certificates. This means website owners should verify their certificates are logged and publicly discoverable in CT logs. While most websites require no action, checking the Certificate Authority (CA) for CT support and monitoring certificates is crucial. Firefox's embrace of tile-based logs further strengthens the CT ecosystem, resulting in a safer browsing experience for users.