Sending Excel files containing crucial financial and business data has risks. To add a layer of protection, you should learn to password protect an Excel file.

Some applications have password protection features built in, while in other cases you'll need to lock up your files using a different method.

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.

Encryption is the matter of safety, I've always said. If you want to keep movies, pictures and other files under a safe lock, choose a password protective software from our guide.

Do you want to protect folders and files with a password? Here's how on Windows 11.

Secure your OneDrive links with simple tips to control access, prevent unauthorized sharing, and safeguard sensitive files effectively.

The widely used PDF format supports data-saving encryption, allowing you to protect sensitive documents so that only those with the correct password can access them. In the old days, you’d need a ...

But what kind of encryption it provides depends on the program you use to create and open the ZIP file. The .zip format supports two forms of encryption and password protection.

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