http://dealbook.nytimes.com/2014/10/08/cyberattack-on-jpmorgan-raises-alarms-at-white-house-and-on-wall-street/ By MICHAEL CORKERY, JESSICA SILVER-GREENBERG and DAVID E. SANGER The New York Times OCTOBER 8, 2014 President Obama and his top national security advisers began receiving periodic briefings on the huge cyberattack at JPMorgan Chase and other financial institutions this summer, part of a new effort to keep security officials as updated on major cyberattacks as they are on Russian incursions into Ukraine or attacks by the Islamic State. But in the JPMorgan case, according to administration officials familiar with the briefings, who would not speak on the record about intelligence matters, no one could tell the president what he most wanted to know: What was the motive of the attack? “The question kept coming back, ‘Is this plain old theft, or is Putin retaliating?’ ” one senior official said, referring to the American-led sanctions on Russia. “And the answer was: ‘We don’t know for sure.’ ” More than three months after the first attacks were discovered, the source is still unclear and there is no evidence any money was taken from any institution. But questions are being asked across Wall Street as other targets emerge. The F.B.I., after being contacted by JPMorgan, took the I.P. addresses the hackers were believed to have used to breach JPMorgan’s system to other financial institutions, including Deutsche Bank and Bank of America, these people said. The purpose: to see whether the same intruders had tried to hack into their systems as well. The banks are also sharing information among themselves. […]