Windows 10 information systems must use BitLocker to encrypt all disks to protect the confidentiality and integrity of all information at rest.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63337	WN10-00-000030	SV-77827r3_rule		Medium

Description
If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can remove non-volatile memory and read it directly, thereby circumventing operating system controls. Encrypting the data ensures that confidentiality is protected even when the operating system is not running.

STIG	Date
Windows 10 Security Technical Implementation Guide	2019-01-04

Details

Check Text ( C-90365r2_chk )
Verify all Windows 10 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.

Check Text ( C-90365r2_chk )

Verify all Windows 10 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.

Fix Text (F-97409r1_fix)
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.