alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP User-Agent (Example)"; flow:established,to_server; http.user_agent; content:"Example"; startswith; endswith; classtype:pup-activity; sid:2007884; rev:12; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_13;)