Bank of American says it is investigating a “significant” data breach that could affect millions of customers.
The bank confirmed on Monday that its data was stolen and that “a number of customers” were impacted.
It has launched an investigation.
The hack came at the end of September.
The breach affected the financial information of millions of people.
Bank of America’s chief information officer said in a statement on Monday the bank was working with law enforcement to investigate the breach and said it had not received any reports of financial losses.
The company has not yet disclosed how many people may have been affected.
Bank Of America was not immediately available for comment.
The hacking is the latest in a string of cyber attacks that have hit the US financial system since the financial crisis of 2008.
In February, hackers released information on nearly $300bn in customer and financial data, which included names, addresses, Social Security numbers and credit scores.