Microsoft Teams’ New “Chat with Anyone” Feature Exposes Users
Microsoft’s upcoming Teams update, set for targeted releases in early November 2025 and worldwide by January 2026, will allow users to initiate chats with only an email address, even if the recipient isn’t a Teams user. This feature raises security concerns among experts.
With chats governed by Entra B2B Guest policies but still confined to the organisation’s boundary, the risk of inadvertent data exposure grows.
The feature rolling out between November and January is "DEFAULT ON" and needs to be disabled by admins.
Please contact your First Technology Group account manager to connect you with our Teams and security specialists to review your Security relating to Teams and how you treat external users going forward
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