alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (HTTP_CONNECT_)"; flow:established,to_server; http.user_agent; content:"HTTP_Connect_"; depth:13; classtype:bad-unknown; sid:2007821; rev:8; metadata:attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Minor, tag Spyware_User_Agent, updated_at 2020_08_25;)