alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Observed Roblox Phishing Domain (rbx-url .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:11; content:"rbx-url.com"; fast_pattern; classtype:social-engineering; sid:2065757; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_11_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Phishing, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_12, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)