Number matching

Concept

An MFA push-notification safeguard in which the sign-in screen shows a number that the user must type into the authenticator app to approve the sign-in. Microsoft enforces it for Microsoft Authenticator push notifications.

Title graphic: Number matching (Concept)

Type	Concept
Documentation	learn.microsoft.com/azure/active-directory/authentication/how-to-mfa-number-match

Articles about Number matching (4)

なぜSMSテキストメッセージによるMFAはMicrosoft 365で安全ではなくなったのか
2026-10-26 · Mirko Peters
SMSテキストメッセージによる多要素認証が、SIMスワップやフィッシングに対してMicrosoft 365テナントを脆弱にする理由と、代わりに使うべき方法を解説します。
Number Matching Deep Dive: パターン、意味、学習を探る
2026-04-26 · Mirko Peters
数字の照合（number matching）という魅力的な世界への深掘りへようこそ。ここでは、数字の照合が実際に何を意味するのか、つまり日常生活やデータ主導の仕事の中で数字をどのように認識し、分析し、理解するのかを解きほぐしていきます。本ガイドでは、単純な数え遊びのような基礎から、見過ごされがちなパターンを見つけるための高度なツールや分析までを取り上げます。
Why SMS Text Message MFA is No Longer Secure for Microsoft 365
2026-10-26 · Mirko Peters
Discover why SMS text message multi-factor authentication leaves Microsoft 365 tenants vulnerable to SIM swapping and phishing, and what you should use instead.
Number Matching Deep Dive: Exploring Patterns, Meaning, and Learning
2026-04-26 · Mirko Peters
Welcome to a deep dive into the fascinating world of number matching. Here, you'll unravel what number matching really means—how we recognize, analyze, and ma…

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Sources

Documentation: learn.microsoft.com/azure/active-directory/authentication/how-to-mfa-number-match
Feed for this topic (RSS): entity/number-matching/feed.xml
Articles on this topic: 4

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03