# No users should be configured for unconstrained delegation

Delegation details on user accounts help defenders quickly identify high-risk service identities and prioritize cleanup.

Source: https://maester.dev/docs/tests/AD-USER-29

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<div class="test-byline"><div class="test-byline-avatars"><a class="test-byline-avatar test-byline-avatar--author" href="/contributors/soulemike" title="Michael Soule · Original author"><img src="https://github.com/soulemike.png" alt="Michael Soule" 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/soulemike">Michael Soule</a></span><a class="test-byline-link" href="/contributors">All contributors →</a></div></div>

<p class="test-part">Part of <a href="/docs/tests/ad">Active Directory</a> · Active Directory · Users · <a href="/docs/tests">All checks</a></p>

```powershell title="Run this check"
Invoke-Maester -TestId AD-USER-29
```

## Overview

Delegation details on user accounts help defenders quickly identify high-risk service identities and prioritize cleanup.

- **Risk prioritization**: Unconstrained delegation is usually more dangerous than protocol transition alone.
- **Account review**: User-based service accounts with SPNs and delegation need strong justification.
- **Incident response**: Detailed visibility speeds triage during suspected Kerberos abuse.

#### Control Type

**Preventive**

#### Security Recommendation

- Review each delegation-enabled user for business need, owner, and scope.
- Remove unnecessary delegation settings.
- Replace legacy service users with safer identity patterns where possible.
- Monitor delegation-enabled accounts for unusual logon or ticket activity.

#### How the Test Works

This test lists each user with `TrustedForDelegation` or `TrustedToAuthForDelegation` enabled and labels the effective delegation type based on the available account flags.

#### Related Tests

- `Test-MtAdUserDelegationConfiguredCount`
- `Test-MtAdUserKnownServiceAccountDetails`

## Details

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

| Field | Value |
| --- | --- |
| Test ID | AD-USER-29 |
| Severity | High |
| Suite | Active Directory |
| Product | Active Directory |
| Feature | Users |
| Area | Authentication |
| Resource type | User |
| User impact | Low |
| Implementation cost | Medium |
| MITRE ATT&CK | T1558 Steal or Forge Kerberos Tickets, T1550.003 Pass the Ticket |
| Supports controls | nist-800-53-r5:AC-6 |
| PowerShell test | [Test-MtAdUserDelegationDetails](https://github.com/maester365/maester/blob/main/tests/ad/user/Test.AD-USER-29.ps1) |
| Services | ActiveDirectory |
| Permissions | ActiveDirectory:Ldap:user:ReadProperty |

</details>

## Source

- Test: [`tests/ad/user/Test.AD-USER-29.ps1`](https://github.com/maester365/maester/blob/main/tests/ad/user/Test.AD-USER-29.ps1)
- Documentation: [`tests/ad/user/Test.AD-USER-29.md`](https://github.com/maester365/maester/blob/main/tests/ad/user/Test.AD-USER-29.md)