This is hard to fathom. 70+ million households is roughly half of the us pop. I do know my web mail virus snatcher caught a virus e-mail this morning before i opened it. It was from the usual nits posing as Chase.com.......

JPMorgan Chase & Co. (JPM), 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. Internal data that identify customers by category, such as whether they are private-bank clients, was also obtained by hackers, said a person briefed on the matter.

The breach affected anyone who visited the company’s websites, including Chase.com, or used its mobile app, said the person, who requested anonymity because that information wasn’t publicly disclosed.

Graphic: Top U.S. Data Breaches

“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,” the company said.

The bank, led by Chief Executive Officer Jamie Dimon, hasn’t detected “any unusual customer fraud” related to the breach, and clients aren’t liable for unauthorized transactions that are promptly reported to the company, according to the filing.

JPMorgan had gigabytes of data, including customer-account information, siphoned by hackers in the attack, which lasted months, people familiar with the incident told Bloomberg News in August, shortly after its detection. Investigators in the case tracked stolen files to a Russian data center, the people said.
Photographer: Ron Antonelli/Bloomberg

The JPMorgan Chase & Co. headquarters in New York City.

To contact the reporter on this story: Hugh Son in New York at hson1@bloomberg.net

To contact the editors responsible for this story: Peter Eichenbaum at peichenbaum@bloomberg.net Dan Kraut