MT.1246 - Ensure Android app protection policy encrypts organization data.

Contributed by Eduard ArbonaAll contributors →

Overview

Ensure at least one assigned Android app protection policy encrypts organization data.

App protection encryption puts the organization's data in the managed apps under a key the Intune App SDK controls, separately from whatever the user has done with the device. On an unenrolled Android phone the organization cannot verify how the device encrypts storage, and the fleet spans a decade of manufacturers and patch levels.

Android exposes this as two settings that can contradict each other:

• Encrypt org data (encryptAppData) requires the app data to be encrypted.
• disableAppEncryptionIfDeviceEncryptionIsEnabled waives that requirement whenever the device reports its own encryption as enabled.

A policy can therefore show encryption as required and encrypt nothing, because the waiver hands the guarantee back to the device the organization does not manage. This test reads both, and reports the contradictory combination as a note even when another policy passes.

Policies that are not assigned to any group are reported by this test but do not count towards a pass, because an app protection policy with no assignment is never applied to a user.

Remediation action

1. Navigate to the Microsoft Intune admin center.
2. Go to Apps > App protection policies.
3. Select an existing Android policy, or select + Create policy and choose Android.
4. Under Data protection > Encryption, set Encrypt org data to Require.
5. Leave the option that disables app encryption when the device is encrypted turned off, so the policy keeps its own key on unmanaged devices.
6. On the Assignments tab, assign the policy to the user groups whose apps hold organization data.
7. Select Next and then Create or Save.

Related links

• Microsoft Learn - Android app protection policy settings
• Microsoft Learn - Data protection framework using app protection policies
• Microsoft Learn - App protection policies overview

Test Metadata

Field	Value
Test ID	MT.1246
Severity	Medium
Suite	Maester
Product	Intune
Feature	App protection
Area	Data protection
Resource type	Tenant
User impact	Low
Implementation cost	Low
MITRE ATT&CK	T1005 Data from Local System
Supports controls	nist-800-53-r5:SC-28(1), nist-800-53-r5:AC-19
PowerShell test	Test-MtAndroidAppProtectionEncryption
Services	Graph
Compatible licenses	INTUNE_A

Source

• Test: tests/maester/intune/Test.MT.1246.ps1
• Documentation: tests/maester/intune/Test.MT.1246.md