TL;DR: Microsoft 365 misconfigurations such as auto-forwarding, excess mailbox delegation, disabled MFA, and configuration drift can create silent exposure across Teams, SharePoint, Entra, and Exchange, according to Abnormal AI. The security problem is not just visibility, but the identity governance gap between policy intent and what actually remains enabled in production.
Editorial analysis by NHI Mgmt Group, based on content published by Abnormal AI: “Exposing the Misconfigurations Attackers Love in Microsoft 365”.
Key questions
Q: What breaks when Microsoft 365 settings drift away from approved identity policy?
A: The control breaks when approved access rules and live platform settings stop matching.
Q: Why do Microsoft 365 configuration gaps create identity governance risk?
A: Because identity, device trust, external collaboration, and mailbox behavior all influence the same access path.
Practitioner guidance
- Map identity-sensitive Microsoft 365 settings Inventory auto-forwarding, mailbox delegation, MFA status, and other collaboration controls that can alter access or data flow across Exchange, Teams, SharePoint, and Entra.
- Establish a live configuration baseline Define the approved state for high-risk Microsoft 365 controls and compare production settings against that baseline continuously, not just during audits.
- Prioritise drift by exposure path Triage settings that expand trust or data movement first, especially anything that can silently relay mail, broaden mailbox authority, or weaken authentication assurance.
Bottom line: Microsoft 365 misconfigurations become identity security problems when live settings no longer match approved policy across collaboration and directory services.
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Microsoft 365 configuration drift is an identity governance failure, not just an admin hygiene problem. The settings in scope here change who can receive, relay, or act on information, so they function as access controls in practice. When those settings are left to drift, the organisation's policy no longer matches its live trust model. The practitioner conclusion is that cloud collaboration settings need continuous governance, not periodic cleanup.
A few things that frame the scale:
- The average time to mitigate a leaked secret is 36 hours, highlighting the operational burden of manual remediation processes, according to the 2024 State of Secrets Management Survey.
- The average estimated time to remediate a leaked secret is 27 days, despite 75% of organisations expressing strong confidence in their secrets management capabilities, according to the State of Secrets in AppSec.
A question worth separating out:
Q: What is the difference between reviewing permissions and reviewing configuration drift?
A: Permission review checks who should have access, while drift review checks whether the live platform still matches the approved security state. In Microsoft 365, both matter because delegated access and authentication settings can become risky even when formal roles look correct. Teams need both views to avoid false confidence.
👉 Read our full editorial: Microsoft 365 misconfigurations expose identity gaps across core apps