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27/06/2026 1:32 pm
TL;DR: Hidden admin access can accumulate through nested groups and distribution lists in Entra ID, leaving exposure invisible to audits that only check direct role assignment, according to Abnormal AI. The real control problem is not individual users but the full inheritance path, which means teams need to bound privileged roles to explicit, reviewed membership.
NHIMG editorial — based on content published by Abnormal AI: Key Insights on hidden admin access in Entra ID
Questions worth separating out
Q: How should teams detect hidden admin access in nested group structures?
A: Start by resolving effective permissions, not direct assignments.
Q: Why do nested groups create more privilege risk than direct role assignments?
A: Nested groups expand access through multiple hops, so each intermediate group can look harmless while still contributing to a privileged end state.
Q: What should organisations change in access reviews for inherited privileges?
A: Access reviews should separate direct entitlement from transitive inheritance and require approvers to confirm the full path to privilege.
Practitioner guidance
- Map effective privilege paths end to end Trace every group, distribution list, and nested membership path that can reach an admin role, then compare effective access against direct role assignment.
- Constrain admin roles to explicit membership Require direct, reviewed membership for any group that can inherit privileged access, and block nested inheritance where the role is sensitive.
- Treat nesting changes as privilege changes Route any new group nesting, distribution list reuse, or role-to-group attachment through the same approval and review process used for privileged access changes.
What's in the full article
Abnormal AI's full analysis covers the operational detail this post intentionally leaves for the source:
- Step-by-step examples of how nested group membership can propagate into privileged Entra ID roles.
- Operational guidance on spotting distribution lists and collaboration groups that unexpectedly inherit admin access.
- The product and engineering perspective on continuous path mapping for effective privilege visibility.
- Practical detail on how to prioritise remediation when the dangerous path is buried three or four hops deep.
👉 Read Abnormal AI's analysis of hidden admin access in Entra ID →
Deep group nesting in Entra ID: where hidden admin access starts?
Explore further
27/06/2026 2:55 pm
Inherited privilege is a governance blind spot, not just an access design choice. Direct-assignment reviews assume the privilege source is visible at the role boundary. In nested environments, that assumption fails because effective access is assembled across several hops, each of which looks individually normal. The implication is that identity governance has to model reachability, not just attachment.
A few things that frame the scale:
- Organisations maintain an average of 6 distinct secrets manager instances, creating fragmentation that undermines centralised control, according to The State of Secrets in AppSec.
- Only 44% of developers are reported to follow security best practices for secrets management, exposing a significant developer behaviour gap, according to The State of Secrets in AppSec.
A question worth separating out:
Q: When does group nesting become an audit failure rather than an organisation design choice?
A: It becomes an audit failure when a privileged role can only be explained by traversing several group hops and no review explicitly validates that path. At that point, the organisation is certifying access it has not actually bounded, which defeats the purpose of recertification.
👉 Read our full editorial: Inherited admin access in Entra ID exposes hidden privilege chains
