alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING GitHub Authentication via client_id in HTTP POST"; flow:established,to_server; urilen:18; http.method; content:"POST"; http.uri; content:"/login/device/code"; fast_pattern; http.accept; content:"application/json"; http.host; content:"github.com"; http.request_body; content:"client_id="; startswith; classtype:misc-activity; sid:2064186; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Mac_OSX, affected_product Linux, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_08_27, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_27; target:src_ip;)