How you go about this will depend on the software you're using to create the file in the first place. Some applications have password protection features built in, while in other cases you'll need ...

Have a private document on your desktop OS? Here's how to keep it secure on Linux, MacOS, and Windows.

You can password protect a PDF on a Mac computer using the Preview app to secure files that contain sensitive information.

Learn how to hide or encrypt specific files in Windows in order to better protect them.

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.

Everyone has private data on their PC, and one of the best ways to safeguard that is to password protect it. But do you know how to password protect a folder?

Learn how to lock Windows 11 PC remotely with Android phone. The feature requires running the latest Windows Insider Preview ...

Prior to Big Sur, locked files would have a lock image overlaid on its icon in the Finder. Big Sur only shows that lock overlay in the Get Info dialog box.