Entra device registration + PRT issuance after device-code sign-in
Detects anomalous activity where a user performs a device-code authentication followed rapidly by a device registration event and the subsequent issuance of a Primary Refresh Token (PRT) or x-ms-RefreshTokenCredential. This pattern is often indicative of OAuth device-authorization flow abuse, where an adversary attempts to register a malicious device to gain persistent access.
Splunk (SPL)
