(Reuters) - Capital One Financial Corp (COF.N) said on Monday that personal information including names and addresses of about 100 million individuals in the United States and 6 million people in Canada were obtained by a hacker who has been arrested.
Another user saw the post and notified Capital One of the breach.
A representative for the U.S. Attorney’s office said it was not immediately clear what the suspect’s motive was.
The incident is expected to cost between $100 million and $150 million in 2019, mainly because of customer notifications, credit monitoring and legal support, Capital One said.
The hacker did not gain access to credit card account numbers, but about 140,000 Social Security numbers and 80,000 linked bank account numbers were compromised, Capital One said.
About 1 million social insurance numbers of the company’s Canadian credit card customers were also compromised.
The Capital One hacker was able to gain access to the data through a misconfigured web application firewall, the U.S. Attorney’s office said. »
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