Best Certificate Transparency Logs Monitoring Solutions The only way to get full visibility to all certificates for an organization’s domains, is using Certificate Transparency logs. Certificate transparency (CT) is a security standard designed to increase the transparency and accountability of the certificate issuance process. CT logs are public, append-only cryptographically verifiable logs that record the issuance and revocation of SSL/TLS certificates, allowing anyone to verify the validity and authenticity of a certificate.