alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Leaf PHPMailer Accessed on External Server"; flow:established,to_client; file.data; content:"Leaf PHPMailer</title>"; fast_pattern; content:"<li>[-email-] : <b>Reciver Email"; content:"<li>[-emailuser-] : <b>Email User"; classtype:web-application-attack; sid:2030015; rev:1; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_04_24, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;)