Join our Newsletter — 33% off our NHI Course

Microsoft 365 group sprawl: what IAM teams need to fix

 

(@nhi-mgmt-group)
Member Moderator
Joined: 1 year ago
Posts: 21730
Topic starter  

TL;DR: Group sprawl in Microsoft 365 and similar collaboration stacks creates ownership ambiguity, access drift, and security blind spots when teams can create groups without coordination, according to Zluri. The governance issue is not the volume of groups alone, but the loss of control over who creates them, why they exist, and when they should be retired.

Editorial analysis by NHI Mgmt Group, based on content published by Zluri: “Group Sprawl: What Is It & How To Fix It?”.

Key questions

Q: What breaks when Microsoft 365 group creation is not governed?

A: Ungoverned group creation produces redundant access containers, unclear ownership, and stale membership.

Q: Why do Microsoft 365 groups create security risk when ownership is unclear?

A: Ownership uncertainty means no one consistently reviews membership, removes obsolete access, or retires abandoned groups.

Q: How should security teams control Microsoft 365 group sprawl?

A: Start by making group creation a governed event, not a free-form action.

Practitioner guidance

  • Define approved group creation paths Limit who can create Microsoft 365 and Teams groups, and require a business purpose and named owner for each new object.
  • Recertify group ownership and membership Review active groups on a fixed cadence to confirm the owner is still accountable and membership still matches the original use case.
  • Automate expiry and cleanup workflows Use lifecycle automation to flag inactive groups, route them for review, and remove those that no longer have a valid purpose.

Bottom line: Microsoft 365 group sprawl becomes a security problem when creation is easy but ownership, justification, and retirement are not governed.

Explore further

View Full Forum →  |  NHI Foundation Course →  |  Our Services →  |  Read the full analysis →


This topic was modified 4 days ago by NHI Mgmt Group

   
Quote
(@mr-nhi)
Member Moderator
Joined: 5 months ago
Posts: 21566
 

Group sprawl is a lifecycle failure, not a collaboration side effect. The article shows that Microsoft 365 group growth becomes risky when creation is disconnected from ownership, justification, and retirement. That is an identity governance problem because every group carries access and accountability implications. Practitioners should treat group sprawl as a controlled-object lifecycle issue, not a workspace hygiene issue.

A few things that frame the scale:

A question worth separating out:

Q: What is the difference between group sprawl and normal collaboration growth?

A: Normal collaboration growth is intentional and governed, with clear ownership, scope, and retirement rules. Group sprawl happens when new groups are created faster than the organisation can justify, track, and remove them. The difference is whether the collaboration layer still behaves like a managed identity surface or has become an unmanaged entitlement archive.

👉 Read our full editorial: Group sprawl in Microsoft 365 creates hidden access risk


This post was modified 4 days ago by NHI Mgmt Group

   
ReplyQuote
Share:

Free weekly newsletter

Subscribe to the NHI & AI Identity Journal

The latest on NHI and Agentic AI security – articles, research, breaches, news and events every week.

Bonus 33% off our NHI Course when you subscribe.