MT.1055: Microsoft 365 Group (and Team) creation should be restricted to approved users.
| ID | MT.1055 |
| Severity | Medium |
| Suite | Mito |
| Product | Entra ID |
| Related products | Teams |
| Feature | Groups |
| Security area | Access control |
| Resource type | Tenant |
| User impact of fixing | Medium |
| Effort to fix | Low |
| Framework controls | nist-800-53-r5:AC-6 Least Privilegenist-800-53-r5:CM-7 Least Functionality |
| Reads from | Microsoft Graph |
What this checks and how to fix it
Section titled “What this checks and how to fix it”This test checks if Microsoft 365 Group creation is restricted to approved users.
By default, all users in the tenant can create Microsoft 365 Groups. This can lead to group sprawl, security risks and compliance issues.
Creating groups should be restricted to users who have undergone training and understand the responsibilities of group ownership, governance and compliance requirements.
Remediation action
Section titled “Remediation action”Unfortunately, Microsoft 365 does not provide a user interface to restrict group creation. However, you can restrict group creation to approved users by using PowerShell.
Follow the link below to restrict Microsoft 365 Group creation to approved users:.
Related links
Section titled “Related links”Mito check. Author: merill. Open-source licences.
Open-source licences. CIS Benchmark material © Center for Internet Security, Inc.; CISA SCuBA baselines are public domain (CC0).
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