How to govern External Access in Microsoft 365
A step-by-step guide to governing External Access in Microsoft 365 with Rencore: detect, review by owner and severity, and remediate with an audit trail.
Governing External Access in Microsoft 365 means finding where it goes wrong, reviewing the findings by owner and severity, and remediating with an audit trail. Rencore covers this concern for Microsoft 365 with the pre-built controls below, so it becomes a repeatable check rather than a one-off cleanup. The steps that follow apply the same detect, review, remediate loop to External Access.
Steps
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Inventory Microsoft 365
Connect Microsoft 365 and let Rencore build a continuous inventory of its resources, owners, and configuration, so governance starts from what exists rather than a stale export.
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Detect with policies
Turn on the pre-built policies that cover External Access in Microsoft 365 to surface oversharing, sprawl, and misconfiguration on the first scan, before writing a single custom rule.
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Review by owner and severity
Use the Microsoft 365 reports to review findings by owner, category, and severity, and to share them with stakeholders who do not have a seat in the platform.
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Remediate and automate
Apply automations to fix findings at scale, route sensitive changes through approvals, and keep every action reversible and logged for the audit trail.
Microsoft 365 controls for External Access
Grounded in the Rencore catalog. See the full Microsoft 365 catalog on the Microsoft 365 connector page.
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External (guest) user
External guest accounts are a common attack vector, raising the likelihood of risky access.
Severity: High -
External Users with pending acceptance
External users which have not accepted invitation to your tenant
Severity: Low -
External users
Shows external users (users with user type 'Guest')
Severity: Information -
Groups with external users
Shows groups that have external users
Severity: Medium -
Inactive external users
Shows external users that have not signed in for more than 6 month
Severity: Medium -
External users invited 3 month ago with pending acceptance
Shows external users invited more than 3 month ago that have not accepted invitation to the tenant
Severity: Low -
Inactive internal users
Shows internal users that have not signed in for more than 6 month
Severity: Medium
