Logging public TLS/SSL certificates in to public CT logs
As of February 1, 2018, DigiCert logs all newly issued public TLS/SSL certificates in to public Certificate Transparency (CT) logs by default. This does not affect any OV certificates issued before February 1, 2018.
Note
CT logging has been required for EV SSL Certificates since 2015.
Why does DigiCert advocate CT logging?
Improves security across the web by providing early detection of misissued certificates.
Checks the integrity of Certificate Authority (CA) practices.
Provides you with a way to monitor all certificates issued for their domains, adding another layer of protection for your domains and customers.
References