Authentication is the "core" and the first gateway to computer security system.
身份验证是计算机安全的核心所在，是安全问题的第一道门户。
Privilege management is always an important problem of computer system security researches and applications.
权限管理问题一直是计算机系统安全研究和应用的热点之一。
Computer system and network security are basis of security of distributed database system.
计算机系统和网络的安全是分布式数据库系统安全的基础。
At present, the virus has become the puzzle computer system security and the computer application important question.
目前，病毒已成为困扰计算机系统安全和计算机应用的重要问题。
Covert channel analysis is an inevitable problem of high security computer system research.
隐通道分析是研究高安全性计算机系统不可回避的问题。
Plentiful evidence proves that the security of computer information system is weak.
越来越多的证据表明计算机信息系统的安全性是十分脆弱的。
Usually hackers or computer virus intrude a computer system by security holes.
通常，计算机黑客和电脑病毒利用安全漏洞入侵计算机系统。
Therefore, the ability to guarantee the security of computer network system and normal operation of network management will become an important issue.
因此，能否保证计算机网络系统的安全和正常运行便成为网络管理所面临的一个重要的问题。
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。
There is an important, direct and realistic significance in research about computer system security.
研究计算机信息系统的安全性具有重大的、直接的现实意义。
The control system of security interlocking protection consisting of PLC and upper computer is introduced.
介绍了由PLC及上位机组成的安全联锁保护控制系统。
While doing this, he will have to avoid the computer-controlled security system.
在过程中，得当心电脑保安系统。
This system is a kind of computer security protection software based on the USB key.
本文首先阐述了桌面保护系统的应用背景及重要实践意义；
This system is a kind of computer security protection software based on the USB key.
本文首先阐述了桌面保护系统的应用背景及重要实践意义；
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