alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET SCAN Stompy Web Application Session Scan"; flow:to_server,established; content:"Session Stomper"; offset:100; depth:25; reference:url,www.darknet.org.uk/2007/03/stompy-the-web-application-session-analyzer-tool/; classtype:attempted-recon; sid:2008605; rev:4; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, updated_at 2019_09_27;)