The security of information system is vital.

信息系统的安全是至关重要的。

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Computer virus is a great threat to the security of information system.

计算机病毒是信息系统安全的大敌之一。

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Employ various security tools to monitor the security of information system.

使用各种各样的安全工具监测信息系统安全。

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The report says the U.S.military's Djibouti-based Combined Joint Task Force-Horn of Africa is currently installing a Maritime Security and Safety Information System in key positions along the Kenyan coast.

VOA: standard.2009.05.01

The White House review found the complex system of maintaining multiple watch lists "is not broken, " but John Brennan, the deputy national security adviser who supervised the review, said the process of feeding information into the watch list system must be strengthened.

NPR: 'System Failure' In U.S. Screening For Terrorists

SELinux includes security enhancements to the operating system that can enforce the separation of information based on the confidentiality and integrity requirements.

CNN: Sci-Tech - PGP working with NSA on Security Enhanced Linux

They can still rely on the services of an information technology firm to upgrade and maintain their system, as well as provide security.

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