alert dns $HOME_NET any -> any any (msg:"ET INFO Email API Domain (resend .dev) in DNS Lookup"; dns.query; dotprefix; content:".resend.dev"; nocase; endswith; classtype:misc-activity; sid:2068053; rev:1; metadata:affected_product Any, attack_target Client_and_Server, created_at 2026_03_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2026_03_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)