Things continue to get worse for a major theft from BlueCross BlueShield of Tennessee. Back on October 2, 2009, 57 computer hard drives were stolen from an office at the state’s largest health insurer. The breach incident page at DataLossDB is a good clearinghouse for information on the theft. The hard drives contained a large trove of personal data, including Social Security numbers, medical diagnoses, insurance ID numbers, and birth dates. BSBST itself has a breach page with updated information.

As the investigation has continued, BCBST is now reporting that approximately twice as many victims are involved as was previously estimated. Wate.com reports that 447,549 more people are at risk. The more that is discovered, the worse the picture gets.