alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP User-Agent (Informer from RBC)"; flow:established,to_server; http.user_agent; content:"Informer from RBC"; fast_pattern; reference:url,www.kliksoftware.com; classtype:pup-activity; sid:2003205; rev:11; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, updated_at 2024_03_02;)