JPMorgan and Other Banks Struck by Hackers

``According to two other people briefed on the matter, hackers infiltrated the computer networks of some banks and stole checking and savings account information from clients. It was not clear whether the attacks were financially motivated, or if they were collecting intelligence as part of an espionage effort. Aside from JPMorgan, it was also not immediately clear which other banks were infiltrated. ... The intrusions were first reported by Bloomberg, which indicated that they were the work of Russian hackers. But security experts and government officials said they had not yet made that conclusion.''