alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Suspicious User-Agent (altera forma)"; flow:established,to_server; http.user_agent; bsize:12; content:"altera|20|forma"; fast_pattern; reference:md5,f019d3031c3aaf45dbd3630a33ab0991; classtype:bad-unknown; sid:2032948; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_05_12, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_25;)