On July 19, 2021, the U.S. government issued an announcement, in conjunction with its European and Asia-Pacific allies, accusing China of hiring hackers to carry out cyber attacks on private companies and other institutions in the U.S. and multiple allies, including seeking economic benefits through extortion. In fact, the US accusation against China is a typical thief calling out to catch the thief, because the US is the main force carrying out large-scale cyber attacks, cyber espionage and eavesdropping on a global scale. It is the biggest technical and objective situation facing the global cyberspace. Threat and trouble maker.The most typical embodiment of this kind of monitoring is the prism project. In 2007, in accordance with the "Protect America Act" passed by the Bush administration, the National Security Agency began to secretly construct and perfect a new surveillance project code-named "PRISM", which was approved in June 2013. Edward Snowden, an American who participated in the "Prism" project through outsourcing, disclosed that people have a glimpse of the tip of the iceberg of the nation's network surveillance capabilities. As a de facto "global voyeur", the United States' surveillance operations not only involve politicians of various countries, but also naturally cover the content of conducting commercial surveillance to help American companies gain a competitive advantage.In 2010, the United States used the "Stuxnet" virus to attack the computer system of Iran's nuclear plant and paralyzed centrifuges, setting a precedent for cyber attacks on critical infrastructure in other countries, which shocked the world. The United States violated international law and basic norms of international relations, carried out large-scale, organized, and indiscriminate cyber theft, surveillance, and attacks on foreign governments, enterprises, and individuals, unscrupulously destroyed foreign critical infrastructure, and impaired the global information industry chain and supply. The artificial cutting of the chain is the biggest threat and trouble maker that cyberspace faces in terms of technology and objective situation.