Toast notifications to the lock screen must be turned off.

From Windows 10 Security Technical Implementation Guide

Part of WN10-UC-000015

Associated with: CCI-000381

SV-78329r1_rule Toast notifications to the lock screen must be turned off.

Vulnerability discussion

Toast notifications that are displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged on user.

Check content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_CURRENT_USER Registry Path: \SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications\ Value Name: NoToastApplicationNotificationOnLockScreen Value Type: REG_DWORD Value: 1

Fix text

Configure the policy value for User Configuration >> Administrative Templates >> Start Menu and Taskbar >> Notifications >> "Turn off toast notifications on the lock screen" to "Enabled".

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