JPMorgan Chase said it was fully cooperating with U.S. law officials to determine the scope of a previously disclosed security breach that compromised internal information and its clients' contact info.
On Thursday, the company disclosed that the breach impacted about 76 million households and 7 million small businesses, but it did not find evidence of unusual fraud activity related to the incident.
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"[T]here 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," the bank said in an SEC filing. "User contact information—name, address, phone number and email address—and internal JPMorgan Chase information relating to such users have been compromised."