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

How to Encrypt a File Using OpenSSL. Secure Sockets Layer is a network communication protocol that provides security for data at the transmission level.

LeoMoon QuickEncrypt is a free software to encrypt and decrypt files and folders on a Windows computer. Learn more about it in this article.

How to Encrypt any File, Folder, or Drive on Your System Trust us, it’s safer this way. Photograph: Peter Dazeley/Getty Images ...

Laptops, external drives, and USB sticks are especially vulnerable to data theft, but with Windows and a few tools, you can protect them using encryption.

GnuPG is an open source implementation of OpenPGP standards, and it allows you to sign and encrypt your files. It is basically a command line tool and a little difficult to get along.

The free, open-source TrueCrypt file encryption program allows you to create encrypted container files for protecting sensitive data. These container files appear just like any other file, which ...

In addition to Windows Vista Ultimate's fancy-pants dual-partition security technology, BitLocker (which I didn't have the hardware to try out, dammit), you can also encrypt individual files right ...

If Windows struggles to open JPG files, here are a few things you can do.