Microsoft Teams Adds Policy to Block External Bots from Meetings
New admin-controlled protection aims to reduce bot-related security risks in Teams meetings.

Key Takeaways
- Microsoft is introducing a new Teams meeting protection policy that blocks external bots from joining meetings.
- The policy gives admins automatic control to prevent potential bot-related attacks, including data leakage and phishing.
- No active exploitation has been reported; the feature is a proactive security enhancement.
- Admins should enable and configure the policy according to Microsoft's guidance to improve meeting security.
Quick answers
- What happened?
- Microsoft is rolling out a new Teams meeting protection policy that lets administrators automatically block all identified external bots from joining meetings. The feature gives admins more control over meeting security, helping to prevent potential data leakage, phishing, and other bot-related attacks. No active exploitation has been reported, and the policy is a defensive measure.
- Which products are affected?
- Microsoft Teams
- What should defenders do?
- Administrators should enable and configure the new Teams meeting protection policy as per Microsoft's guidance. It is recommended to test the policy in a controlled environment before full deployment to ensure it does not disrupt legitimate meeting workflows.
Microsoft has announced a new policy for Microsoft Teams that allows administrators to automatically block all identified external bots from joining Teams meetings. The feature, reported by BleepingComputer on August 24, 2026, is part of Microsoft's ongoing efforts to enhance meeting security and give admins more granular control over who can participate in meetings.
The policy is designed to prevent potentially malicious bots from entering meetings, thereby reducing risks such as data leakage, phishing, and other bot-related attacks. By enabling this policy, admins can ensure that only approved participants join meetings, minimizing the attack surface for social engineering and unauthorized access.
According to the report, the policy is being rolled out gradually, and Microsoft has provided guidance for administrators on how to enable and configure it. No specific bot threats or incidents that prompted this feature were detailed in the report, and no active exploitation has been observed. The feature is purely a defensive measure.
Organizations using Microsoft Teams should review their meeting security settings and consider enabling this policy to strengthen their defenses against bot-based threats. As with any new feature, admins should test the policy in a controlled environment before full deployment to ensure it does not disrupt legitimate meeting workflows.
Security Details
The new policy allows admins to automatically block all identified external bots from joining Teams meetings. This reduces the risk of malicious bots accessing meeting content, potentially preventing data leakage, phishing, and other bot-related attacks. The feature is a defensive measure and no active exploitation has been reported.
Affected products
Microsoft Teams
Mitigation
Administrators should enable and configure the new Teams meeting protection policy as per Microsoft's guidance. It is recommended to test the policy in a controlled environment before full deployment to ensure it does not disrupt legitimate meeting workflows.
Sources
BleepingComputer
Microsoft Teams now lets admins block external bots from meetings
Aug 24, 2026 · 14:00
Original link
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