alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious UA Observed (YourUserAgent)"; flow:established,to_server; http.user_agent; content:"YourUserAgent"; startswith; fast_pattern; endswith; reference:md5,c1ca718e7304bf28b5c96559cbf69a06; classtype:bad-unknown; sid:2027484; rev:4; metadata:created_at 2019_06_17, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, updated_at 2024_04_13;)