If you have sensitive data you'd like to keep from prying eyes in a Microsoft Excel file, the easiest way to protect it is with Excel's built-in password tools.

Sending important documents? Learn how to password protect PDFs for extra security using easy steps with Adobe Acrobat and free online tools.

To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.

Tech guru Kurt "CyberGuy" Knutsson explains how to password-protect files or folders in the cloud and on file-sharing platforms like Microsoft Word, OneDrive and Google Drive.

Do you share PDF documents with people? Here's a guide on how to password protect a PDF on Mac to protect it from unauthorized access, editing, and printing.

The best way to protect any document you have to send by email is to create a password to control both access and in some cases, ensuring the document can’t be changed.

To password protect parts of a Word document, you need to add a Continuous Section Break first. Then, you can go to the Review tab and use the Restrict Editing option.

Adding password protection to a PDF can make the file even more secure and is the best practice when sharing any sensitive information.

Secure your sensitive files on Mac with ease. Learn how to password protect folders on Mac and keep your data safe from prying eyes.