REUTERS/Eduardo Munoz
"User contact information - name, address, phone number and email address - and internal JPMorgan Chase information relating to such users have been compromised," the company said in a new SEC filing.
"However, there is no evidence that account information for such affected customers - account numbers, passwords, user IDs, dates of birth or Social Security numbers - was compromised during this attack."
According to the filing, this is regarding a previously disclosed cyberattack.
In August, Bloomberg reported that the FBI was investigating a possible Russian hack into JP Morgan's systems.
The New York Times later reportede that "checking and savings accounting information" were stolen. JP Morgan's filing today suggests this isn't true.
JP Morgan says that they have not seen "any unusual customer fraud related to this incident."
"The Firm continues to vigilantly monitor the situation and is continuing to investigate the matter," the company said.
JPM shares were down 0.4% in after-hours trading.