The National Security Agency China claims that America’s National Security Agency used sophisticated cyber tools to hack into an elite Chinese research university. The attack allegedly targeted the Northwestern Polytechnical University in Xi’an (not to be confused with a California school of the same name), which is highly ranked in the global university index for its science and engineering programs. The U.S. Justice Department has referred to the school as a “Chinese military university that is heavily involved in military research and works closely with the People’s Liberation Army,” which would make it as a pretty reasonable target for digital…