How to Record Snapshots for Teams Memberships

Teams membership snapshots.

A lawyer asked if it is possible to take a snapshot of Teams memberships (people who were members at a certain point). This isn’t something that every Microsoft 365 tenant will want to do, but good reasons no doubt exist for the request. In any case, PowerShell makes it easy to find the team membership data and record it in a CSV file or XLS spreadsheet.

Use the Audit Log to Monitor Membership Changes in Selected Microsoft 365 Groups

A reader asks how to monitor membership changes for some specific high-profile groups. You can buy a commercial product to do the job or use PowerShell to exploit the information held in the Office 365 audit log. A combination of a custom attribute assigned to the sensitive groups and an audit log search does the job.