INTUNE-007: BitLocker encryption policy audit
- Platform
- Entra ID / M365
- Category
- Intune / Endpoint Management
- Severity
- High
- Zero Trust pillar
- Devices (weight 3)
- Golden fixtures
- 3
- Branch coverage
- Observed: fixtures prove the verdicts they exercise
- Provenance
- baseline
What it checks
BitLocker drive encryption protects data at rest on Windows devices, preventing unauthorized access to the hard drive contents if a device is lost or stolen. Without a properly configured BitLocker policy, devices may store corporate data unencrypted, exposing sensitive information. The policy must enforce encryption on OS and fixed data drives with secure key recovery options.
Recommended value
BitLocker enabled on all OS and fixed data drives with XTS-AES 256-bit encryption and Azure AD key escrow
Remediation
Create or update the Intune endpoint protection profile to require BitLocker encryption on operating system and fixed data drives using XTS-AES 256-bit encryption. Configure recovery key escrow to Azure AD to ensure key recovery is possible and set the policy to silently enable encryption without user interaction. Monitor the encryption status report to identify devices that have not completed encryption and remediate any failures.
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
- NIST SP 800-53
- SC-28
- CIS M365 Benchmark
- 1.1.17