China has accused a U.S. spy agency of hacking a government-funded university with aeronautics and space research programs, in Beijing¡¯s latest effort to hit back at Washington¡¯s complaints of cyberespionage.

The National Security Agency¡¯s Office of Tailored Access Operations carried out the attacks on Northwestern Polytechnical University in Xi¡¯an, China¡¯s National Computer Virus Emergency Response Center said in a statement. A team from the center and 360 Security Technology analyzed the university¡¯s information systems after an attack from overseas was reported in June, the center added.

The NSA conducted more than 10,000 ¡°vicious¡± cyberattacks on Chinese targets in recent years, collecting more than 140 gigabytes of data of ¡°great value,¡± it said. The NSA and State Department declined to comment on the allegations.