alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Rust HTTP Client User-agent Observed (ureq)"; flow:established,to_server; http.user_agent; content:"ureq/"; fast_pattern; startswith; reference:url,github.com/algesten/ureq; classtype:misc-activity; sid:2069193; rev:1; metadata:attack_target Client_and_Server, tls_state plaintext, created_at 2026_05_07, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Informational, updated_at 2026_05_07; target:src_ip;)