alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP User-Agent (browserbob.com)"; flow:to_server,established; http.user_agent; content:"Mozilla/4.0 |28|compatible|3b 20|MSIE 6.0|3b 20|Windows NT 5.1|3b 20|SV1|3b 20|Made with www.browserbob.com)"; fast_pattern; bsize:85; classtype:pup-activity; sid:2011279; rev:5; metadata:created_at 2010_09_28, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_31;)