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

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.

You can prevent users or yourself from deleting files or folders accidentally in Windows 11/10. Here is how you can protect data from accidental deletion ...

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

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.

Microsoft Excel lets you embed content from other applications, including PDF files. You can embed a PDF file into a cell of an Excel worksheet and then use Excel's security features to lock the ...