# All enterprise applications have owners

Without owners, enterprise applications become orphaned assets that threat actors can exploit through credential harvesting and privilege escalation…

Source: https://maester.dev/docs/tests/ZTA.21867

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## Overview

Without owners, enterprise applications become orphaned assets that threat actors can exploit through credential harvesting and privilege escalation techniques. These applications often retain elevated permissions and access to sensitive resources while lacking proper oversight and security governance. The elevation of privilege to owners can raise a security concern, depending on the application's permissions. More critically, applications without an owner can create uncertainty in security monitoring where threat actors can establish persistence by using existing application permissions to access data or create backdoor accounts without triggering ownership-based detection mechanisms.

When applications lack owners, security teams can't effectively conduct application lifecycle management. This gap leaves applications with potentially excessive permissions, outdated configurations, or compromised credentials that threat actors can discover through enumeration techniques and exploit to move laterally within the environment. The absence of ownership also prevents proper access reviews and permission audits, allowing threat actors to maintain long-term access through applications that should be decommissioned or had their permissions reduced. Not maintaining a clean application portfolio can provide persistent access vectors that can be used for data exfiltration or further compromise of the environment.

## Remediation

- [Assign owners to applications](https://learn.microsoft.com/entra/identity/enterprise-apps/assign-app-owners?wt.mc_id=zerotrustrecommendations_automation_content_cnl_csasci)

## Run it

The check runs as part of the whole assessment, with the ZeroTrustAssessment module installed:

```powershell
Install-Module ZeroTrustAssessment -Scope CurrentUser
Connect-Maester
Invoke-Maester -Pack ZTA -SkipBuiltIn
```

Leave out `-SkipBuiltIn` to run Maester's own checks in the same run.

<details>
<summary>About this check</summary>

| | |
| --- | --- |
| Severity | Low |
| Effort to fix | Medium |
| Impact on users | Low |
| Pillar | Identity |
| Category | Access control |
| Product | [Entra ID](/docs/tests/products/entra) |
| Feature | Applications |
| Area | Applications and workload identities |
| ATT&CK | [T1098.001](/docs/tests?mitre=T1098.001) Additional Cloud Credentials, [T1078.004](/docs/tests?mitre=T1078.004) Cloud Accounts |
| Licence | P1 |
| Tenant | Workforce, External |

Product, feature, area and ATT&CK are Maester's: the assessment does not record them, so Maester keeps them in the pack's `taxonomy.json`.

</details>

<p class="mt-ms-note not-content"><svg class="mt-ms-note__logo" viewBox="0 0 21 21" aria-hidden="true"><rect width="10" height="10" fill="#f25022"/><rect x="11" width="10" height="10" fill="#7fba00"/><rect y="11" width="10" height="10" fill="#00a4ef"/><rect x="11" y="11" width="10" height="10" fill="#ffb900"/></svg><span>A Microsoft check, part of the <a href="/docs/tests/packs/zero-trust-assessment">Zero Trust Assessment</a> pack. Text from ZeroTrustAssessment 3.1.0, © Microsoft, <a href="/docs/tests/packs/zero-trust-assessment#licence">MIT licence</a>.</span></p>
