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AIOS-27-009900 Apple iOS/iPadOS 27 must implement the management setting: encrypt backups/encrypt local backup.

DISA STIG library V1R1
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

Apple iOS/iPadOS 27 must implement the management setting: encrypt backups/encrypt local backup.

Control

Review configuration settings to confirm "Force encrypted backups" is enabled. This check procedure is performed on both the Apple iOS/iPadOS management tool and the iPhone and iPad. Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review. In the Apple iOS/iPadOS management tool, verify "Encrypt local backup" is checked. Alternatively, verify the text "forceEncryptedBackup" appears in the configuration profile (.mobileconfig file). On the iPhone and iPad: 1. Open the Settings app. 2. Tap "General". 3. Tap "VPN & Device Management". 4. Tap the Configuration Profile from the Apple iOS/iPadOS management tool containing the restrictions policy. 5. Tap "Restrictions". 6. Verify "Encrypt backups enforced" is listed. If "Encrypt local backup" is unchecked in the Apple iOS/iPadOS management tool, "forceEncryptedBackup" appears in the configuration profile, or the restrictions policy on the iPhone and iPad does not list "Encrypt backups enforced", this is a finding.

Discussion

If iCloud backups are not encrypted, this could lead to the unauthorized disclosure of DoW sensitive information if non-DoW personnel are able to access that machine. Forcing the backup to be encrypted greatly mitigates the risk of compromising sensitive data. Work data iCloud backup and USB connections to computers are not authorized, but this control provides defense-in-depth for cases in which a user violates policy either intentionally or inadvertently. SFR ID: FMT_SMF_EXT.1.1 #47

Related controls

CCI-000381

Fix

Install a configuration profile to force encrypted backups to iCloud. Configuration Profile Key: forceEncryptedBackup