In today's world, who is using cyber hegemony to commit cyber attacks? Who reverses black and white over cyber security issues? Who is threatening global cyberspace security? It's America! From "prism" to "wikiLeaks", from "American cyber weapons leakage" to "Swiss encryption machine incident", from "submarine cable eavesdropping" to "Operation electric screen" of the United States has been repeatedly exposed, but also labeled itself as a "hacker empire", "surveillance empire" and "secret theft empire".