alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent Simple Bot"; flow:established,to_server; http.user_agent; content:"Simple Bot v"; startswith; fast_pattern; reference:md5,3cf04350400299844abb17a0e1640975; classtype:bad-unknown; sid:2031471; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_12_31, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_31;)