Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO Observed ZeroSSL SSL/TLS Certificate"; flow:from_server,established; tls.cert_issuer; content:"ZeroSSL"; classtype:misc-activity; sid:2031231; rev:3; metadata:created_at 2020_11_23, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_01;)