As a relatively new technology, an overwhelming majority of people, businesses and organizations do not understand the importance of security in digital data storage. The average hard drive sees thousands of files written to it, many of which contain sensitive information. Over the course of a hard drives lifetime, the likelihood for recoverable remnants of sensitive information left on a hard drive at its' end of life is very high. To see this firsthand, simply try out KillDisk's File Browser on your system drive. You'll be surprised to see what you find!
Note: Additionally, try formatting a USB drive with files on it and browse it with KillDisk's File Browser as well. Data breaches are not limited to hard drives!