“My instinct is this is espionage,” said Mr. Ferrante, who previously served in top cybersecurity positions at the White House and the F.B.I. In addition to jamming the cellular network, he said, such a large amount of equipment near the United Nations could be used for eavesdropping. James A. Lewis, a cybersecurity researcher at the Center for European Policy Analysis in Washington, said that only a handful of countries could pull off such an operation, including Russia, China and Israel. In addition to the Secret Service, the New York Police Department, the Justice Department, Homeland Security Investigations and the office of the director of national intelligence are investigating. “This is an ongoing investigation, but there’s absolutely no reason to believe we won’t find more of these devices in other cities,” Mr. McCool said.
Source : Cache of Devices Capable of Crashing Cell Network Is Found Near U.N. – The New York Times