Cryptainer LE
Ich verwende ja kein Windows und wenn würde ich wohl eher TrueCrypt einsetzten, aber was soll’s, hier ein Hinweis auf Cryptainer LE
Free encryption program Cryptainer LE offers an automated, one-container method of securing those files you’d rather others not take a peek at. The application creates a virtual drive on your hard drive, thumb drive or anywhere you want it to, and files placed in that drive are automatically secured with 128-bit encryption. Turn the program off and the drive disappears; turn it back on, enter a password, and you’ve got your files back.
via Lifehacker