Note! The voice call option is available only in paid tenants. I also introduce some methods how the rogue administrator can bypass MFA when using user’s compromised credentials.įor short, multi-factor authentication (MFA) is an authentication process where the user must use more than one form of an identification.įirst method is typically a user name and password combination, and the second one can be for example an SMS one-time-password (OTP) or authentication application.Īzure AD MFA supports the following forms of verification: In this blog, I’ll report my findings on how the Azure AD MFA works under-the-hood, and how I built a custom authenticator app for Android. In most cases, it protects users from phishing attacks as the attackers can’t log in even they have user’s credentials. Multi-factor Authentication (MFA) is nowadays a recommended method for providing extra protection for users. “Bypass” MFA by editing users’ MFA settings.Implementing AADInternals Authenticator.

Step 10: (HTTP) ConfirmActivationResponse.Step 9: (HTTP) phoneAppAuthenticationResultResponse.Step 8: (HTTP) phoneAppAuthenticationResultRequest.Step 4: (HTTP) phoneAppValidateDeviceTokenResponse.Step 3: (HTTP) phoneAppValidateDeviceTokenRequest.

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