alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Microsoft Tech Support Scam 2020-03-24"; flow:established,to_client; file.data; content:"<title>Microsoft _Official_Support"; classtype:social-engineering; sid:2029733; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_03_24, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_03_24;)