USB Lock - Version 1.2.6 USB Lock helps you password protect USB Drives, Thumb Drives, Memory Cards, external drives and Flash Drives. USB Lock is hassle-free and does not need a rocket scientist to master. The application keeps your portable drive and the data stored across various platforms including Windows, Mac, and Linux etc. USB flash drives are the most popular way to move data from one PC to another. They are small in size but can carry gigabytes of data. They are easy to use, convenient, affordable, but at the same time they pose a security risk and can be easily lost, stolen or misplaced. A USB drive password protected with USB Lock is a must these days as the data it contains may cost you millions of dollars if stolen or lost.With USB Lock, your USB flash drives and all other