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Inactive Guest Users
Detects guest accounts that have long periods of inactivity. These accounts are often targeted by adversaries as they do not have the same scrutiny as internal accounts. Most compliance frameworks require you to assess and purge these users promptly. A Microsoft Entra ID (Azure AD) business-to-business (B2B) collaboration user's UserType = Guest. A user will fail this check if they have a guest account that has been inactive for more than 30 days.
First, assess the users' security posture. We can also determine if users have conditional access and MFA enabled. We recommend deleting these users on a schedule, as they are easy to re-invite.
To delete users in Microsoft Entra ID, you can select "Delete User" from the "Actions" button in User profiles.
Default Check Settings
Number of days: 30