You never know when one of your files might reach someone it wasn't intended to reach—perhaps through an email forward, a USB stick left behind on a desk, or maybe ...

The more levels of security you have on your Mac, the safer your files will be. This is particularly true if you allow multiple people to use your computer. For your most sensitive files, it's a good ...

An icon in the shape of a lightning bolt. Impact Link It takes about 10 seconds to add password protection to a PDF when you use a Mac's Preview software, and those few seconds you invest could save ...

You probably already know how to password protect your computer, locking out other, but if you know how to password protect folders you can safely let others use your ...

This week a reader writes, “In (a recent) column you mentioned that you keep some of your passwords in your iPhone in a locked note. Could you please explain how one locks a note? It sounds So useful.

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 ...

The Notes app, particularly paired with iCloud syncing, provides an easy way to jot down shopping lists, share information with other people, and record your private thoughts. But because some people ...