Certificate Transparency logs

Certificate Transparency (CT) logs are publicly accessible records of digital certificates issued to websites, helping to detect and prevent fraudulent or misissued certificates. When a certificate authority (CA) issues a certificate, it logs this event in a CT log, which is then visible to anyone. Browsers and security tools verify certificates against these logs to ensure they were legitimately issued. This process promotes transparency, accountability, and enhances trust in secure online communications by making it easier to spot and block malicious or erroneous certificates before they can be exploited.