As the FBI and U.S. Secret Service investigated the scope of recent cyberattacks on U.S. financial institutions, the nation's largest banks said Thursday that they hadn't seen any unusual fraud activity from their customers' accounts.
Officials at JPMorgan Chase & Co., Bank of America Corp. and Citibank said they didn't immediately see any customers being victimized.
"Companies of our size unfortunately experience cyberattacks nearly every day," JPMorgan spokeswoman Patricia Wexler said. "We have multiple layers of defense to counteract any threats and constantly monitor fraud levels."
Computer hackers constantly sniff around to find an...