alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY GridinSoft.com Software Version Check"; flow:established,to_server; http.user_agent; content:"GridinSoft"; startswith; classtype:misc-activity; sid:2013719; rev:7; metadata:attack_target Client_Endpoint, created_at 2011_10_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_05_15, reviewed_at 2024_03_11; target:src_ip;)