AP203385635615AP/Mikhail KlimentyevRussian President Vladimir Putin.
US officials are far more concerned than they are publicly acknowledging about the gigantic cyberattack against JPMorgan that affected as many as 76 million households.
And they believe Russians with at least loose connections to the country's government are behind the attack, according to a new report from The New York Times.
JP Morgan revealed Thursday that as many as 76 million households and 7 million small businesses may have had private data compromised in the breach, one of the largest and most serious into a US corporation.
Data that may have been compromised in the breach include contact information and "internal JPMorgan Chase information" relating to the users, according to an SEC filing from the company.
They weren't alone, according to the new report. The Times says that "about" nine other financial institutions were infiltrated by the same group of hackers, though the breadth and scope of those breaches aren't known.
One US official speculated that the hack may be in retaliation for US sanctions against Russia amid the ongoing crisis in Ukraine.