Executables, scripts, and installers are a favorite weapon for attackers. And since Teams is the hub of collaboration, it often becomes the easiest entry point. One careless share in a chat or channel can lead to malware, data compromise, or even a tenant-wide breach.
To tackle this, Microsoft Teams is introducing file protection that automatically blocks unsafe, weaponizable file types before they ever reach your users.
π π’π₯ππ¬ π₯π’π€π .ππ±π, .ππ₯π₯, .π’π¬π¨, .π―ππ¬, .ππ©π€, ππ§π 50+ π¨ππ‘ππ«Β risky formats will be blocked in internal and external conversations.
βοΈ Recipients see a βmessage blockedβ notification with no access to the file.
βοΈ Senders can edit their message and resend without the unsafe attachment.
βοΈ Works across Teams desktop (Windows/Mac), web, and mobile (iOS/Android).
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ππππ πππ ππππππ ππ :
Teams Admin Center β Messaging Settings β βScan messages for file types that are not allowedβ
Or via PowerShell with the -FileTypeCheck parameter
This is a much-needed frontline defense against file-based attacks inside Teams. For the complete list of blocked file types, check here: MC1148540