Microsoft Teams will soon warn you of malicious links and files

Microsoft is improving protection against malicious files and links in Microsoft Teams, a problem that has been growing lately. According to a Microsoft 365 Message Center alert, users will start receiving warnings when they send or receive messages classified as malicious.

In addition, messages in chats and channels that contain EXE files will be blocked altogether since EXE files are a common vector for malware. Thanks to enhanced integration with Microsoft Defender, all communication from blocked domains will also be disallowed.

“To help users stay protected from malicious content, we’re introducing message warnings in Microsoft Teams,” says the alert. “This new feature displays a warning banner on messages containing URLs flagged as Spam, Phish, or Malware—whether the message is internal or external. These warnings enhance user awareness and complement existing security protections like Safe Links and ZAP.” See the official support page to learn more about how link protection works in Teams.

The rollout of this new Microsoft Teams security feature will begin with a public preview later in September and is expected to reach general availability by November. It will be available to Microsoft Defender for Office 365 (MDO) customers and Microsoft Teams enterprise customers.

:story: PCWorld