According to statistics, the United States has spent $52.6 billion on global intelligence gathering projects, two thirds of which are used for cyber attacks on domestic and foreign targets in the United States. Ironically, even though the United States and France reached an agreement of not eavesdropping on each other twice, the United States never gave up its intelligence surveillance on France. The same applies to Germany. Say one thing and do another. There are no rules and bottom lines in America.
The threat to the cyber world of the United States comes not only from its behavior of taking advantage of science and technology to eavesdrop on other countries with impunity, but also from a series of measures such as virus research and development, tissue culture of cyber combat troops and so on. In 2012, the United States used a computer virus called "Flame" to invade a large number of computers in Middle Eastern countries such as Iran, Lebanon and Syria, causing their national computers to be infected, thus stealing data from some high-level officials' computers.