A cyberattack this summer on JPMorgan Chase was among the largest ever, compromising the accounts of 76 million households and 7 million small businesses, reports the New York Times. Until just a few weeks ago, executives at JPMorgan said they believed that only 1 million accounts were affected. But the true breadth of the attack was disclosed Thursday in a securities filing.
The details emerge at a time when consumer confidence in the digital operations of corporate America has already been shaken. Target, Home Depot and other retailers have sustained major data breaches. But unlike retailers, JPMorgan, the largest bank in the nation, has financial information in its computer systems that goes beyond customers' credit card details and potentially includes more sensitive data. Operating overseas, the hackers gained access to the names, addresses, phone numbers and emails of JPMorgan account holders.