Microsoft Teams: Unified attachment flow on Teams Mobile

🚨 The Signal: Teams Mobile now has a unified content picker for attachments, allowing users to attach any file or media type from a single interface. This streamlines content sharing but requires vigilance over data exfiltration risks.

The Impact

All mobile Teams users are affected, increasing the risk of unintentional data sharing or exfiltration.

• End-users: Increased ease of sharing may lead to accidental exposure of sensitive data.
• Security Teams: Broader attachment options require re-evaluation of mobile data loss prevention (DLP) policies.
• Admins: Need to ensure existing mobile device management (MDM) and app protection policies are robust for Teams Mobile.

The Action

1. Review existing Microsoft Purview Data Loss Prevention (DLP) policies for Teams and mobile devices via Microsoft Purview compliance portal (compliance.microsoft.com).
2. Verify Microsoft Intune App Protection Policies (APP) for Microsoft Teams on mobile platforms to restrict data movement (intune.microsoft.com > Apps > App protection policies).
3. Communicate best practices to end-users regarding sensitive data handling and sharing on mobile devices.
4. Monitor Teams audit logs for unusual attachment activity, especially from mobile devices (compliance.microsoft.com > Audit).

Domain: Teams · Impact: medium · Workload: Teams