JPMorgan Chase & Co., the biggest U.S. bank, said a previously disclosed data breach affected 76 million households and 7 million small businesses.
Customer names, addresses, phone numbers and e-mail addresses were taken, the New York-based bank said today in a regulatory filing. Hackers also obtained internal data identifying customers by category, such as whether they are clients of the private-bank, mortgage, auto or credit-card divisions, said a person briefed on the matter.
