China accused the United States on Sunday of endangering its cyber security with the attack launched on the email system of the Xi'an Polytechnic University (northwest), during the summer, he reported. Prensa Latina. The director general of the department of North America and Oceania of the Foreign Ministry, Yang Tao, said that Washington's actions threatened both the technical secrets of the country's institutions as well as the infrastructure and personal information. He demanded that the White House stop these actions, specifying that there are "clear facts and irrefutable evidence" in this regard. Yao's statement follows an investigation that revealed the…