Thanks to a new feature for Microsoft Teams, the next time you hear the app's famous ring for calls, you won't have a brand impersonator on the other end.

The change is set to start rolling out in mid-May. The rollout should be complete by the end of the month.

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Why Teams is a target for impersonation

We first covered this feature in January, but it is only rolling out now. While many people use Teams for internal chats, external calls are a normal part of sales, support, and client work.

If you speak with customers or partners, you probably receive a steady stream of calls from unknown contacts. That makes Teams an attractive target for brand impersonation and other social‑engineering attacks.

Teams users have already been on the receiving end of phishing attempts. Earlier this year, Check Point researchers found attackers using urgent billing names to bypass detection and pressure people into responding. Brand Impersonation Protection is meant to catch the same kind of behavior when it happens over a call instead of a message.

Microsoft continues to add security features across Teams, but safe practices still matter. You should treat unexpected invites or calls with caution and verify anything that feels out of place. If something looks suspicious, you should ask an admin to confirm who is trying to reach you.

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