Data Exposed in Attack on S.C. Revenue Department

As many as 3.6 million Social Security numbers and 387,000 credit and debit card numbers used by state taxpayers could have been exposed to a hacker in recent cyber attacks on the South Carolina Department of Revenue's computers, officials said. The vast majority of the credit card numbers used by state taxpayers were encrypted, but about 16,000 were not, meaning the data was fully exposed, state police said.