The benefits of information security-protecting computer systems and networks-are inherently invisible: if threats have been averted, things work as normal.

信息安全的利益在于——保护计算机系统和网络——具有其余生俱来的的不可见属性：如果危险已经转移，则一切都会正常工作。

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The PLA has established information warfare units to develop viruses to attack enemy computer systems and networks, and tactics and measures to protect friendly computer systems and networks.

解放军已建成若干信息战单位，开发病毒攻击敌方计算机系统和网络，并研究战术和措施以保护友方计算机系统和网络。

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Wireless networks, which allow employees to connect laptops and other devices to central computer systems, have become a standard feature, even for smaller companies.

无线网络可以让雇员把笔记本电脑和其它装置连接到中央计算机系统上，它已成为企业的标准特征，即便对小企业也是如此。

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Lead by example through making certain government computer systems and networks are secure and that the best information security measures are used.

CNN: Global panel issues Internet security recommendations

He joined with two hackers to form a group that became known as the International Subversives, and they broke into computer systems in Europe and North America, including networks belonging to the U.S. Department of Defense and to the Los Alamos National Laboratory.

NEWYORKER: No Secrets

These threats encompass potential espionage, violent acts against the Government or the Nation, and unauthorized disclosure of classified information, including the vast amounts of classified data available on interconnected United States Government computer networks and systems.

WHITEHOUSE: The White House