alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED HSN.com Toolbar Spyware User-Agent (HSN)"; flow:to_server,established; content:"User-Agent|3a| "; nocase; http_header; content:"HSN"; http_header; fast_pattern:only; pcre:"/User-Agent\:[^\n]+HSN/iH"; classtype:trojan-activity; sid:2003495; rev:11; metadata:attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Minor, tag Spyware_User_Agent, updated_at 2019_07_26;)