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Safe Attachments for SharePoint, OneDrive, and Microsoft Teams

Copper Contributor

Microsoft 365 employs a shared virus detection engine to scan files uploaded by users to SharePoint Online, OneDrive, and Microsoft Teams. It's important to note that not all file types are automatically scanned; rather, heuristics are used to determine which files to scan.

If we enable Defender for Office 365 for SharePoint, OneDrive, and Microsoft Teams (configured in global settings under Safe attachment), will it block files based on their file hashes or file attachments? Additionally, will it block specific file types such as .zip or .rar  similar to anti-malware policies where message types with specified attachments are treated as potential malware?

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