Health insurer Anthem Inc. said hackers broke into a database containing personal information on about 80 million of its customers and employees, the Wall Street Journal reported.
Investigators are still determining the extent of the incursion that was discovered last week, and Anthem said it is likely that tens of millions of records were stolen, the Journal reported.
Reuters could not immediately reach Anthem for comment.
The company told the Journal that the breach exposed names, birthdays, addresses and Social Security numbers but did not appear to involve medical information or financial details such as credit card or bank account numbers, nor were there signs the data was being sold on the black market.
“This attack is another reminder of the persistent threats we face, and the need for Congress to take aggressive action to remove legal barriers for sharing cyber threat information,” U.S. Rep. Michael McCaul, a Republican from Texas and chairman of the Committee on Homeland Security, said in a statement late Wednesday.