alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Windows Help and Support Center XSS Attempt"; flow:established,to_client; content:"hcp|3A|//"; fast_pattern; nocase; content:"script"; nocase; distance:0; content:"defer"; nocase; reference:cve,2010-1885; classtype:attempted-user; sid:2012756; rev:2; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2011_04_29, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;)