alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP User-Agent (???)"; flow:established,to_server; http.user_agent; content:"???"; startswith; fast_pattern; content:!"|20|Sparkle|2f|"; classtype:pup-activity; sid:2010595; rev:10; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, updated_at 2024_03_11;)