alert dns $HOME_NET any -> any any (msg:"ET INFO URI Shortening Domain in DNS Lookup (p1 .rs)"; dns.query; bsize:5; content:"p1.rs"; nocase; classtype:misc-activity; sid:2047623; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_08_11, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_11, reviewed_at 2024_03_11; target:src_ip;)