DLP can detect whether a file is encrypted by PGP or zip, but, cannot decrypt these kind of files and capture the content for detection.

Can encrypted files be searched?

To make encrypted files searchable on Windows 10, use these steps: ... Under the "File Settings" section, and check the Index encrypted files option. Warning: You can enable this option while using a device without encryption.

How do I view an encrypted file?

Encrypted files do not have a special file extension, but they do have a lock displayed on the icon. To unlock these files, all you have to do is log into your computer using your password. If someone else logs into your computer, the files cannot be opened.