From Apple iOS 11 Security Technical Implementation Guide
Part of PP-MDF-302220
Associated with: CCI-002338
Backups to remote systems (including cloud backup) can leave data vulnerable to breach on the external systems, which often offer less protection than the MOS. Where the remote backup involves a cloud-based solution, the backup capability is often used to synchronize data across multiple devices. In this case, DoD devices may synchronize DoD-sensitive information to a user's personal device or other unauthorized computers that are vulnerable to breach. Disallowing remote backup mitigates this risk.
Note: This requirement is Not Applicable if the AO has approved users' full access to the Apple App Store for downloading unmanaged (personal) apps and syncing personal data on the device with personal cloud data storage accounts (see Section 2.9 of the STIG Supplemental document for more details). The site must have an AO-signed document showing the AO has assumed the risk for users' full access to the Apple App Store.
Review configuration settings to confirm iCloud Backup is disabled.
This check procedure is performed on both the Apple iOS management tool and the Apple iOS device.
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 management tool, verify "Allow iCloud backup" is unchecked.
Alternatively, verify the text "
Install a configuration profile to disable iCloud Backup.
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