Microsoft is going to require the following licenses for Teams Chat message subscription:
Office 365 E5
Office 365 A5
Microsoft 365 E5
Microsoft 365 A5
Microsoft 365 Information Protection and Governance
Office 365 Advanced Compliance
To make sure Cloud App Security can continue protecting your Teams Chat messages after this requirement is applied, Trend Micro recommends you use one of the preceding licenses to provision your Teams Chat service account. For more information, see the Microsoft documentation.
Provision a service account for Microsoft Teams (Chat) to allow Cloud App Security to run advanced threat protection and data loss prevention scanning on messages and files in protected private chats.
Cloud App Security protects the Teams and Chat services in Microsoft Teams separately.
Cloud App Security scans contents and files that employees send within private chats with other users (one to one or one to many). Private chat files are stored in the sender's OneDrive folder.
If you have also provisioned a OneDrive service account, when the user sending or uploading a file is selected as a policy target respectively, Cloud App Security applies the corresponding policies for Teams Chat and for OneDrive to this file.
The steps outlined below detail how to provision a service account for Teams Chat from Dashboard.
The Provision Service Account for Teams Chat screen appears.
The Microsoft logon screen appears.
The Microsoft authorization screen appears.
Cloud App Security then updates the Teams Chat data in your organization. The time required depends on how much data you have in Teams Chat.
If the message "Teams Chat protected." appears on the Notifications screen, the provisioning is successful.