alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Node XMLHTTP User-Agent"; flow:established,to_server; http.user_agent; content:"node-XMLHttpRequest"; depth:19; endswith; nocase; fast_pattern; classtype:unknown; sid:2027388; rev:4; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_05_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;)