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Apple iOS must not display notifications when the device is locked.


Finding ID Version Rule ID IA Controls Severity
V-71797 AIOS-02-080009 SV-86421r1_rule Medium
Many mobile devices display notifications on the lock screen so users can obtain relevant information in a timely manner without having to frequently unlock the phone to determine if there are new notifications. However, in many cases, these notifications can contain sensitive information. When they are available on the lock screen, an adversary can see them merely by being in close physical proximity to the device. Configuring the MOS to not send notifications to the lock screen mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #21
Apple iOS 10 Security Technical Implementation Guide 2017-02-14


Check Text ( C-72057r1_chk )
Review configuration settings to confirm "Show Notification Center in Lock screen" 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 "Show Notification Center in Lock screen" is unchecked.

Alternatively, verify the text "allowLockScreenNotificationsView " appears in the configuration profile (.mobileconfig file).

On the Apple iOS device:
1. Open the Settings app.
2. Tap "General".
3. Tap "Profiles" or "Profiles & Device Management" or "Device Management".
4. Tap the Configuration Profile from the iOS management tool containing the management policy.
5. Verify "Notifications view on lock screen not allowed" is present.

If "Show Notification Center in Lock screen" is checked in the Apple iOS management tool, "allowLockScreenNotificationsView " appears in the configuration profile, or the restrictions policy on the Apple iOS device from the Apple iOS management tool does not list "Notifications View on lock screen not allowed", this is a finding.
Fix Text (F-78149r1_fix)
Install a configuration profile to disable Notification Center from the device Lock screen.