Encrypt files downloaded from Sharepoint online site

Question

What are my options when it comes to encrypting all files downloaded from a SharePoint online site? The scenario is that an internal user downloads a file from the SharePoint site and shares it externally. We would like the file to be encrypted so that if it is copied to a thumb drive or mailed using a third party service we would like that file to be encrypted.

any suggestions would be appreciated.

Answer 1

You could enable IRM for the document library to encrypt downloaded files.

When people download files in an IRM-enabled library, the files are encrypted so that only authorized people can view them. Each rights-managed file also contains an issuance license that imposes restrictions on the people who view the file. Typical restrictions include making a file read-only, disabling the copying of text, preventing people from saving a local copy, and preventing people from printing the file.

Go to Library settings -> Information Rights Management -> Select the Restrict permission to documents in this library on download check box.

Reference: https://learn.microsoft.com/en-us/microsoft-365/compliance/apply-irm-to-a-list-or-library?view=o365-worldwide

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