According to a 2016 study published by Blancco Technology Group, out of 200 used computer drives purchased, from eBay and Craigslist, 67 percent of the drives held personally identifiable information and 11 percent contained sensitive corporate data. The only way, to be sure, that your information is gone, is to destroy the hard drive. Crown Information Management can destroy those hard drives for you, providing you with a complete chain of custody.