Rule History

alert dns $HOME_NET any -> any any (msg:"ET INFO Commonly Abused Link Agregating Service Domain in DNS Lookup (linkup .top)"; dns.query; bsize:10; content:"linkup.top"; nocase; classtype:misc-activity; sid:2052242; rev:2; metadata:attack_target Client_Endpoint, created_at 2024_04_23, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_20;)