ROPC Authentication via python-requests User Agent

Duo Tech@duotech

•updated Jul 14, 2026•1•0•4

This rule detects authentication attempts in Azure AD Sign-in Logs where the User Agent identifies the request as originating from the Python Requests library (version 2.32.3). This pattern is often indicative of Resource Owner Password Credentials (ROPC) flows, which are frequently abused by threat actors to perform credential stuffing or automated authentication bypassing multi-factor authentication (MFA) requirements in cloud environments.