New audit events are available to capture information about Teams meetings and participants, but only if you have Office 365 E5 or above licenses. That’s because Microsoft deems these events to be high-value audit information prized by forensic investigators when they try to unravel what happened in an incident. You’ll have to make your own mind up how valuable the events are, but we’ve written some PowerShell to make the data more accessible.
Microsoft has released information about high-value Office 365 audit events and audit event retention policies. Both are part of a Microsoft 365 Advanced Audit offering. The MailItemsAccessed event is the first high-value audit event (we can expect more) and the retention policies are used to purge unneeded events from the Office 365 audit log.