Microsoft Teams: Open message links in new window

🚨 The Signal: Microsoft Teams now allows users to open links from chats and channels in a new window. This feature enhances multitasking but introduces a minor risk of users inadvertently exposing sensitive information across multiple windows.

The Impact

All Teams users are affected, with a low security risk related to potential inadvertent data exposure across multiple open windows.

• End-users: May inadvertently expose sensitive data across multiple open windows.
• Security Teams: Need to reinforce data handling best practices for multi-window use.
• Compliance Teams: Minor increase in risk of data spillage, requiring user awareness.
• IT Admins: No direct administrative action required, but awareness is key.

The Action

1. Review and update user training materials to include best practices for handling sensitive information across multiple Teams windows.
2. Communicate to users the importance of being mindful of open windows when handling sensitive data.
3. Consider reinforcing data loss prevention (DLP) policies for Teams if not already robustly implemented.

Domain: Teams · Impact: low · Workload: Teams