alert dns $HOME_NET any -> any any (msg:"ET INFO URL Shortener Domain in DNS Lookup (url .rw)"; dns.query; bsize:6; content:"url.rw"; nocase; reference:url,url.rw/p/urlrw-vs-bitly; classtype:misc-activity; sid:2059279; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_01_15, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_01_15, reviewed_at 2025_03_14;)