alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Pipka JS Skimmer CnC Request"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?"; content:"pipka="; within:20; fast_pattern; reference:url,usa.visa.com/dam/VCOM/global/support-legal/documents/pfd-identifies-new-javascript-skimmer.pdf; classtype:command-and-control; sid:2028993; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_11_18, deployment Perimeter, malware_family Pipka, performance_impact Low, confidence Medium, signature_severity Major, tag CardSkimmer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_19;)