alert udp $HOME_NET any -> any 57621 (msg:"ET POLICY Spotify P2P Client"; flow:to_server; dsize:44; content:"|53 70 6f 74 55 64 70 30|"; depth:8; threshold:type limit, count 1, track by_src, seconds 300; classtype:not-suspicious; sid:2027397; rev:1; metadata:affected_product Windows_Client_Apps, attack_target Client_Endpoint, created_at 2019_05_30, deployment Internal, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)