TR Dojo: File encryption made simple with TrueCrypt Bill Detwiler shows you how to encrypt and hide your sensitive date using a free, open-source application called TrueCrypt. Once you’ve watched this TR Dojo video, you can find a link to the original TechRepublic article and print the tip from our <a href="http://blogs.techrepublic.com.com/itdojo/?p=1600">TR Dojo Blog</a>.