alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Fake AV Phone Scam Landing June 4 2015 M3"; flow:established,to_client; file_data; content:"<title>Advised System Support!</title>"; fast_pattern; nocase; content:"Your Computer May Not Be Protected"; nocase; distance:0; content:"Possible network damages if virus not removed immediately"; nocase; distance:0; classtype:social-engineering; sid:2021183; rev:3; metadata:created_at 2015_06_04, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_16;)