Microsoft Teams to Implement Enhanced Security Features and External User Controls by January 2026
Originally Published 18 days ago — by BleepingComputer
Microsoft Teams will soon allow security admins to block external users from messaging or calling within Teams via integration with Defender for Office 365, enhancing security and control over external communications. The feature, rolling out in January 2026, supports managing up to 4,000 blocked domains and 200 email addresses, and aims to prevent cyberattacks like social engineering and ransomware.