他还表示，网络防御将是未来5至10年最为重要的问题。
He also said cyber defense would be an important issue for the next five to 10 years.
网络防御的另外一个重要的方面是提高计算机自身的安全性。
Another important component of cyber defense is to improve security on the computers themselves.
许多公司如洛克希德·马丁航空公司等的网络防御都遭到渗透。
Defence companies such as Lockheed Martin have seen some of their cyber-defences penetrated.
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