Citigroup said Wednesday that the number of credit card accounts impacted by hackers in an incident last month is roughly double what was initially reported, according to a piece by Reuters.
Citi disclosed the attack last week, saying that roughly 1 percent of its North American card accounts – around 200,000 – were thought to be affected. But yesterday, the bank said that some 360,000 accounts had been compromised.
The data that was exposed did not include Social Security numbers or secret personal safety information, such as PINs. But the hackers did access information such as names, account numbers, and contact information, including email addresses.
Citi said that it has already notified and issued new cards for more than 217,000 cardholders.