Rule History

alert dns $HOME_NET any -> any any (msg:"ET INFO Observed DNS Query to Cloudflare Developer Domain (workers .dev)"; dns.query; dotprefix; content:".workers.dev"; nocase; endswith; classtype:misc-activity; sid:2051767; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2024_03_22, deployment Perimeter, malware_family Cloudflare_Workers, performance_impact Low, confidence High, signature_severity Informational, tag Cloudflare_Workers, updated_at 2026_03_06;)