alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Tech Support Scam Landing 2020-08-19"; flow:established,to_client; file.data; content:"<strong>VIRUS ALERT FROM MICROSOFT"; fast_pattern; content:"<b>This computer is BLOCKED"; distance:0; content:"<strong>Microsoft Security"; distance:0; classtype:social-engineering; sid:2030705; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_08_19, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_19;)