STIGQter: STIG Summary: Microsoft Windows 11 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

Windows 11 information systems must use BitLocker to encrypt all disks to protect the confidentiality and integrity of all information at rest.

DISA Rule

SV-253259r1210282_rule

Vulnerability Number

V-253259

Group Title

SRG-OS-000404-GPOS-00183

Rule Version

WN11-00-000030

Severity

CAT I

CCI(s)

CCI-002475 - Implement cryptographic mechanisms to prevent unauthorized modification of organization-defined information when at rest on organization-defined system components.

Weight

Fix Recommendation

Enable full disk encryption on all information systems (including SIPRNet) using BitLocker.

BitLocker, included in Windows, can be enabled in the Control Panel under "BitLocker Drive Encryption" as well as other management tools.

Note: An alternate encryption application may be used in lieu of BitLocker providing it is configured for full disk encryption and satisfies the pre-boot authentication requirements (WN11-00-000031 and WN11-00-000032).

Check Contents

For AVD implementations with no data at rest, this is NA.

Verify all Windows 11 information systems (including SIPRNet) employ BitLocker for full disk encryption.

If full disk encryption using BitLocker is not implemented, this is a finding.

Verify BitLocker is turned on for the operating system drive and any fixed data drives.

Open "BitLocker Drive Encryption" from the Control Panel.

If the operating system drive or any fixed data drives have "Turn on BitLocker", this is a finding.

Note: An alternate encryption application may be used in lieu of BitLocker providing it is configured for full disk encryption and satisfies the pre-boot authentication requirements (WN11-00-000031 and WN11-00-000032).

Vulnerability Number

V-253259

Documentable

False

Rule Version

WN11-00-000030

Severity Override Guidance

Check Content Reference

Target Key

5471