alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY .onion.ly Proxy domain in SNI"; flow:established,to_server; tls.sni; content:".onion.ly"; fast_pattern; classtype:policy-violation; sid:2030216; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_26;)