alert dns $HOME_NET any -> any 53 (msg:"ET DNS Query for .co TLD"; dns.query; content:".co"; endswith; classtype:bad-unknown; sid:2027759; rev:4; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_07_26, deployment Perimeter, deprecation_reason Performance, performance_impact Significant, confidence Medium, signature_severity Informational, updated_at 2024_03_26;)