Checking Where Tenant Users Go as Guests

External guest activity.

After all the fuss about Teams users inviting people to chat via email, tenant administrators realize that knowing where users are active as guest accounts is not as easy as it might seem. Part of the problem is that data about user activity is mostly controlled by host rather than home tenants. However, it’s possible to extract some information from audit sign-in logs to figure out where tenant users go as guests.

How to Exploit Entra ID Sign-in Data to Detect Problem Service Principals

Service principal sign-in data from Entra ID is now accessible through a Microsoft Graph API. This means that you can analyze sign-in data to locate problem apps and remove old or unwanted service principals from your Microsoft 365 tenant. It’s time for spring cleaning!