Capital One has announced that a hacker “accessed the personal information of approximately 100 million card customers and applicants, one of the largest ever data breaches of a big bank,” according to Wall Street Journal.
The alleged hacker, Paige Thompson, was arrested on Monday by federal officials in Washington state.
Amongst the information contained in the breach was approximately 140,000 social security numbers and 80,000 bank account numbers, as well as credit scores and transaction data, WSJ says.
Wall Street Journal goes on to say that “The bank said that no credit-card numbers or login credentials had been exposed and that its internal investigation is ongoing. The incident is expected to cost the bank approximately $100 million to $150 million.”
The information was mainly from applications by customers and small businesses for credit cards from 2005 to 2019.