alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Fake AV Phone Scam Landing June 4 2015 M1"; flow:established,to_client; file_data; content:"<title>MICROSOFT WINDOWS SECURITY ALERT</title>"; nocase; fast_pattern; content:"<title>WARNING: VIRUS CHECK</title>"; nocase; distance:0; classtype:social-engineering; sid:2021181; rev:3; metadata:created_at 2015_06_04, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_16;)