alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO SUSPICIOUS UA starting with Mozilla/9"; flow:established,to_server; http.user_agent; content:"Mozilla/9"; depth:9; nocase; classtype:bad-unknown; sid:2016694; rev:5; metadata:created_at 2013_04_02, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;)