EIDAUTH-002: MFA Registration Status for All Users
- Platform
- Entra ID / M365
- Category
- Entra ID Authentication Methods & MFA
- Severity
- Critical
- Zero Trust pillar
- Identity (weight 3)
- Golden fixtures
- 3
- Branch coverage
- Observed: fixtures prove the verdicts they exercise
- Provenance
- baseline
What it checks
All users should be registered for multi-factor authentication to prevent account compromise through stolen or guessed credentials. Accounts without MFA registration are the primary target for credential-based attacks including password spraying and phishing. Unregistered users represent critical gaps in your identity security posture.
Recommended value
100% of active users registered for MFA
Remediation
Review MFA registration status via Entra ID > Protection > Authentication methods > User registration details. Enforce MFA registration through Conditional Access policies requiring MFA for all users. Set a registration deadline and communicate requirements to unregistered users.
Fixture-proven verdicts
Every verdict below is proven by a golden fixture in the module's gating test suite. This table derives from the last green run; it cannot be edited by hand.
| Scenario | Expected verdict |
|---|---|
| clean | PASS |
| known-bad | FAIL |
| no-data | Not Assessed |
Framework mappings
- CISA SCuBA
- MS.AAD.3.2v2
- NIST SP 800-53
- IA-2(1), IA-2(2)
- CIS M365 Benchmark
- 5.2.2.1
- MITRE ATT&CK
- T1078, T1110