Rule History

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed URL Shortener Service Domain (cutt .ly in TLS SNI)"; flow:established,to_server; tls.sni; content:"cutt.ly"; bsize:7; fast_pattern; classtype:misc-activity; sid:2038569; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_19, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_19, reviewed_at 2024_12_02;)