TrueCrypt is a free open-source program for encrypting data and it's excellent for securing hard drives, but it also has the ability to hide a secret operating system inside another operating system. CNET shows you how this "insider secret" operating system is created. This operating system will be impossible to prove to people like the Feds.
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.