Internal Revenue Service - 18/03/2014
A former emloyee of the IRS took home a computer thumb drive that contained personal information on 20,000 current and former employees and contractors. The information included Social Security numbers, names and addresses. The thumb drive was plugged into the employees unsecured network, which could have left the information vulnerable. This incidence dates back to 2007 before the IRS stared using automatic encryption. The IRS will not comment why they did not discover this breach until now, or if the employee who used the thumb drive is still working at the IRS.