Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Empty HTTP Content Type Server Response - Potential CnC Server"; flow:established,to_client; content:"Content-Type|3A 20 0D 0A|"; http_header; classtype:command-and-control; sid:2016712; rev:3; metadata:created_at 2013_04_04, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)