alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Observed DeepFreezeWeb User-Agent"; flow:established,to_server; http.user_agent; content:"DeepFreezeWeb"; bsize:13; classtype:policy-violation; sid:2029912; rev:1; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2020_04_15, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2020_04_15;)