From LG Android 5.x Interim Security Configuration Guide
Part of PP-MDF-001008
Associated with: CCI-000366
The operating system must ensure the data being written to the mobile device's built-in storage media is protected from unauthorized access. If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an adversary can read storage media directly, thereby circumventing operating system controls. Encrypting the data ensures confidentiality is protected even when the operating system is not running.
This validation procedure is performed on both the MDM Administration Console and the LG Android device. Check whether the appropriate setting is configured on the MDM Administration Console: 1. Ask the MDM administrator to display the "Encryption" setting in the MDM console. 2. Verify "Device Encryption" is selected. On the LG Android device: 1. Unlock the device 2. Navigate to: Settings >> Security >> Encrypt phone 3. Verify "Encrypt phone" is enabled and cannot be disabled. If the "Device Encryption" is not enabled, or if the user is able to disable the setting on the device, this is a finding.
Configure the mobile device to enable data-at-rest protection for on-device storage. On the MDM Administration Console, enable "Device Encryption" for on-device storage.
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