alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Request for Possible Microsoft Phishing Hosted on Github.io"; flow:established,to_server; tls.sni; content:"microsoft"; content:".github.io"; endswith; fast_pattern; content:!"microsoft.github.io"; depth:19; endswith; content:!"microsoftedge.github.io"; depth:23; endswith; classtype:policy-violation; sid:2027274; rev:5; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_04_23, deployment Perimeter, confidence Medium, signature_severity Minor, tag Phishing, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_06;)