https://blog.torproject.org/blog/detecting-certificate-autho...
Bottom line is certificate revocation lists and OCSP don't mean anything to an attacker like Iran who is MITM'ing the relevant traffic.
https://blog.torproject.org/blog/detecting-certificate-autho...
Bottom line is certificate revocation lists and OCSP don't mean anything to an attacker like Iran who is MITM'ing the relevant traffic.