alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Microsoft Phish Landing Page M3 2026-01-22"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/Windows/invite.php"; fast_pattern; classtype:social-engineering; sid:2066990; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_01_22, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, tag Phishing, updated_at 2026_01_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)