EIDCA-007: MFA Enforcement via Conditional Access
- Platform
- Entra ID / M365
- Category
- Entra ID Conditional Access
- 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
Multi-factor authentication should be required for all users through Conditional Access policies to prevent credential-based attacks. Without MFA enforcement, compromised passwords alone grant full access to organizational resources, making this the single most impactful control against account takeover.
Recommended value
MFA required for 100% of users across all cloud applications via Conditional Access
Remediation
Create a Conditional Access policy targeting all users and all cloud applications with a grant control requiring multifactor authentication. Verify the policy covers all user types including guests and external collaborators. Monitor the sign-in logs to confirm MFA is being prompted and review the CA insights workbook for coverage gaps.
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 |
| throttled | Not Assessed |
Framework mappings
- CISA SCuBA
- MS.AAD.3.1v1, 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