alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SCAN crimscanner User-Agent detected"; flow:established,to_server; http.method; content:"GET"; http.user_agent; content:"crimscanner/"; nocase; classtype:network-scan; sid:2010954; rev:6; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_04;)