Microsoft Teams: Send messages to attendees in the meeting lobby with lobby chat

🚨 The Signal: Meeting organizers can now send one-way messages to attendees in the Teams meeting lobby. This improves communication for external participants but introduces a new communication channel that requires awareness.

The Impact

Meeting organizers and external attendees are affected, with a low security risk related to information dissemination.

• Meeting Organizers: Can send messages to external attendees.
• External Attendees: Receive messages while in the lobby.
• Security Teams: Need to be aware of this new communication channel.

Domain: Teams · Impact: low · Workload: Teams