Major Banks Hit by Cyberattacks; Accounts Unaffected

Bank of America, JPMorgan Chase, Citigroup, U.S. Bancorp and PNC have been hit by a wave of cyberattacks that have caused Internet blackouts and delays on online banking sites. Such attacks, while a nuisance, are not technically sophisticated and typically do not affect a company’s computer network — or, in this case, funds or customers’ bank accounts.