alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Suspicious UA (Chrome)"; flow:established,to_server; http.header; header_lowercase; content:"user-agent|3a 20|Chrome|0d 0a|"; fast_pattern; classtype:bad-unknown; sid:2027916; rev:6; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2019_08_26, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2024_04_29, reviewed_at 2024_02_20;)