CSC is a contractor for the State of North Carolina . In the course of performing services for the State , we put information from the Medicare Exclusion Database on a thumb drive . This information included your name , Social Security Number ( SSN ) , federal tax Employer Identification Number ( EIN ) , and date of birth . It also included other information from the database that is publicly available . In early March , we discovered the loss of this thumb drive in CSC facilities in Raleigh , North Carolina . Although not discovered until March , the thumb drive containing this information is believed to have been lost in late February . ;