# Ensure iOS app protection policy limits offline access to organization data

Ensure at least one assigned iOS app protection policy limits offline access to organization data.

Source: https://maester.dev/docs/tests/MT.1242

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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.1242
```

## Overview

Ensure at least one **assigned** iOS app protection policy limits offline access to organization data.

Every revocation an administrator can perform on an unenrolled phone travels through the app protection check: disabling the account, removing the user from the assigned group, or issuing a selective wipe. The **offline grace period** is how long the managed app keeps opening organization data without that check, and a device kept in airplane mode is a device that has received none of those decisions.

Two settings bound it:

- **Offline grace period** (`periodOfflineBeforeAccessCheck`) blocks access until the app can check in again.
- **Offline grace period / wipe** (`periodOfflineBeforeWipeIsEnforced`) removes the organization's data from a device that never comes back.

This test asks for at most **12 hours** before access is blocked and at most **90 days** before the data is wiped, the values the Intune data protection framework publishes for enterprise data protection.

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 **Conditional launch** > **App conditions**, add **Offline grace period** with the action **Block access** and a value of **720** minutes (12 hours) or less.
5. Add a second **Offline grace period** condition with the action **Wipe data** and a value of **90** days or less.
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**.

Both values are stored as ISO 8601 durations. A value of zero means the condition exists but bounds nothing, so this test requires a positive value as well as one under the limit.

#### Related links

- [Microsoft Learn - Data protection framework using app protection policies](https://learn.microsoft.com/intune/app-management/protection/data-protection-framework)
- [Microsoft Learn - iOS app protection policy settings](https://learn.microsoft.com/intune/app-management/protection/ref-settings-ios)
- [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.1242 |
| Severity | Low |
| Suite | Maester |
| Product | Intune |
| Feature | App protection |
| Area | Access control |
| Resource type | Tenant |
| User impact | Medium |
| Implementation cost | Low |
| MITRE ATT&CK | T1078.004 Cloud Accounts |
| Supports controls | nist-800-53-r5:AC-12, nist-800-53-r5:AC-19 |
| PowerShell test | [Test-MtIosAppProtectionOfflineGracePeriod](https://github.com/maester365/maester/blob/main/tests/maester/intune/Test.MT.1242.ps1) |
| Services | Graph |
| Compatible licenses | INTUNE_A |

</details>

## Source

- Test: [`tests/maester/intune/Test.MT.1242.ps1`](https://github.com/maester365/maester/blob/main/tests/maester/intune/Test.MT.1242.ps1)
- Documentation: [`tests/maester/intune/Test.MT.1242.md`](https://github.com/maester365/maester/blob/main/tests/maester/intune/Test.MT.1242.md)
