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Business Systems House 2026
Multi-Factor Authentication (MFA) Fatigue Protection & Number Matching
Microsoft Entra ID MFA Number Matching Location Context Conditional Access FIDO2
Multi-Factor Authentication (MFA) Fatigue Protection & Number Matching
Upgraded corporate MFA security policies across all user accounts to defeat MFA prompt bombing and fatigue attack vectors.
Key Features & Implementation
- Number Matching Enforcement: Mandated entering matching display numbers in the Microsoft Authenticator app to approve sign-in attempts.
- Geographic Location Display: Enabled real-time city and IP location context within push notification prompts to alert users of fraudulent login attempts.
- Legacy Auth Block: Disabled legacy IMAP/POP3 authentication protocols across all Exchange Online mailboxes to prevent MFA bypass.