Multifactor authentication (MFA)

Concept

A sign-in method that requires at least two proofs of identity, for example a password plus a code or approval in an authenticator app. It blocks the vast majority of account-takeover attempts caused by stolen passwords.

Glossary

Related topics in brief

• Microsoft Entra ID · Related to · Product
  Microsoft's cloud identity and access management service, formerly Azure Active Directory. It handles sign-in, single sign-on, multifactor authentication, Conditional Access and app registrations for Microsoft 365, Azure and thousands of other apps.
• Conditional Access · Related to · Concept
  A policy engine in Microsoft Entra that decides at sign-in whether to allow, block or require extra steps, based on signals such as user, device compliance, location and risk. It is the core of a Zero Trust approach in Microsoft 365.

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