Microsoft Teams: Shared tab in channel

🚨 The Signal: The 'Files' tab in Microsoft Teams channels is now 'Shared', displaying all files and links from conversations alongside document library content. This centralises content discovery but increases the visibility of all shared data.

The Impact

All channel users are affected by increased visibility of shared content, raising the risk of unintended information exposure.

• End Users: Easier content discovery, but higher risk of seeing sensitive links.
• Data Owners: Increased visibility of shared data, requiring review of sharing practices.
• Security Teams: Potential for increased data exposure if sharing policies are not robust.
• Compliance Officers: Greater challenge in enforcing information governance and DLP policies.

The Action

1. Review existing Microsoft Purview DLP policies for Teams to ensure they cover shared links and files.
2. Communicate to users about responsible sharing practices within Teams channels.
3. Audit Teams channels for sensitive information shared via links or files that may now be more visible.
4. Consider implementing sensitivity labels for Teams channels to classify and protect content.

Domain: Purview · Impact: medium · Workload: Teams