# Ensure iOS app protection policy encrypts organization data

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

Source: https://maester.dev/docs/tests/MT.1240

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<div class="test-byline"><div class="test-byline-avatars"><a class="test-byline-avatar test-byline-avatar--author" href="/contributors/earbona23" title="Eduard Arbona · Original author"><img src="https://github.com/earbona23.png" alt="Eduard Arbona" width="28" height="28" loading="lazy" decoding="async" /></a></div><div class="test-byline-meta"><span class="test-byline-text">Contributed by <a href="/contributors/earbona23">Eduard Arbona</a></span><a class="test-byline-link" href="/contributors">All contributors →</a></div></div>

<p class="test-part">Part of <a href="/docs/tests/maester">Maester</a> · Intune · App protection · <a href="/docs/tests">All checks</a></p>

```powershell title="Run this check"
Invoke-Maester -TestId MT.1240
```

## Overview

Ensure at least one **assigned** iOS 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 phone the organization cannot require a device passcode, and iOS data protection is only as strong as the passcode behind it: a device with no passcode gives little protection to files at rest.

The setting is a choice of **when** the data is encrypted, not a simple switch. `appDataEncryptionType` takes four values, and the default, **useDeviceSettings**, defers the question to the device, which is exactly the thing an unenrolled phone does not guarantee.

A pass needs one of **whenDeviceLocked**, **whenDeviceLockedExceptOpenFiles** or **afterDeviceRestart**, on a policy that is assigned.

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](https://intune.microsoft.com).
2. Go to **Apps** > **App protection policies**.
3. Select an existing **iOS** policy, or select **+ Create policy** and choose **iOS**.
4. Under **Data protection** > **Encryption**, set **Encrypt org data** to **Require**.
5. Set **Encrypt org data on enrolled devices** as your deployment requires, and choose an **Encrypt org data** option other than **Use device settings**.
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 - iOS app protection policy settings](https://learn.microsoft.com/intune/app-management/protection/ref-settings-ios)
- [Microsoft Learn - Data protection framework using app protection policies](https://learn.microsoft.com/intune/app-management/protection/data-protection-framework)
- [Microsoft Learn - App protection policies overview](https://learn.microsoft.com/intune/app-management/protection/overview)

## Details

<details>
<summary>Every attribute of this check</summary>

| Field | Value |
| --- | --- |
| Test ID | MT.1240 |
| 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-MtIosAppProtectionEncryption](https://github.com/maester365/maester/blob/main/tests/maester/intune/Test.MT.1240.ps1) |
| Services | Graph |
| Compatible licenses | INTUNE_A |

</details>

## Source

- Test: [`tests/maester/intune/Test.MT.1240.ps1`](https://github.com/maester365/maester/blob/main/tests/maester/intune/Test.MT.1240.ps1)
- Documentation: [`tests/maester/intune/Test.MT.1240.md`](https://github.com/maester365/maester/blob/main/tests/maester/intune/Test.MT.1240.md)