alert dns $HOME_NET any -> any any (msg:"ET POLICY DNS Query to .onion proxy Domain (onion . ly)"; dns.query; content:".onion.ly"; fast_pattern; endswith; nocase; reference:url,en.wikipedia.org/wiki/Tor_(anonymity_network); classtype:policy-violation; sid:2030215; 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;)