If you want a tool helpful to protect your computer and that uses government based technology, MyWinLocker is the utility you are looking for. This is a really cool software you can use when you need to protect, encrypt or lock your information and folders. It is capable to hide your personal folders inside your hard drive and place them in a very secure space that can only be found with a right keyword you need to previously set.
Its interface is one of the most elegant and sophisticated in the market. It has an excellent layout, well designed and with an excellent performance.