However, if you use a phone call or text message (SMS) to authenticate, you will not be impacted by this update. It is not possible to opt out of number matching when using the app. Note: This update impacts anyone who uses the Microsoft Authenticator app to authenticate. Authenticating through number-matching prevents this type of attack. During an MFA fatigue attack, a hacker steals your password in a phishing attempt and spams you with MFA push notifications, hoping that you’ll let them access your data. These regulations prevent a new form of hacking called MFA fatigue attacks. Cybersecurity Agency that protect your account from hackers. Microsoft is launching the number-matching update to comply with new MFA regulations from the U.S. Smartphone with the Microsoft Authenticator app installed, computer About

This article shows you what this number-matching process looks like. Starting February 27, when using the Microsoft Authenticator app with Azure MFA, you’ll be prompted to enter a number shown on your screen to complete your login.

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