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In the twenty-first century,network and information security is becoming the critical foundation of cyberspace for a new way of life and a new approach to fighting wars.From the perspective of a national strategy,the scandal about Snowden and the National Security Agency’s PRISM has shown that all network information,communication information,and individuals’Internet behavior are under surveillance in the global world by those countries dominant in information technology(IT).In 2011,the USA released the‘‘International Strategy for Cyberspace’’[1],which embodies a new trend in global cyber security,with the US cyber security strategy changing from defense to
In the twenty-first century, network and information security is the critical foundation of cyberspace for a new way of life and a new approach to fighting wars. From the perspective of a national strategy, the scandal about Snowden and the National Security Agency's PRISM has shown that all network information, communication information, and individuals' Internet behavior are under surveillance in the global world by those countries dominant in information technology (IT) .In 2011, the USA released the “International Strategy for Cyberspace” [1 ], which embodies a new trend in global cyber security, with the US cyber security strategy changing from defense to