At last, the popular technology about computer network virus detection and information and network security is summarized.

最后，对计算机网络病毒的检测和当前网络安全的主流技术进行了分析。

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By the development of computer science and network technology, the circumstances on the security of information and network are increasingly rigorous.

随着计算机信息技术与网络技术的迅猛发展，信息与网络的安全形势也日趋严峻和复杂化。

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This article first analyzes the security of computer network, introduces basic technology that guarantee the security and emphasizes that cryptography is the core technology.

本文第一章分析计算机网络的安全性，介绍保障计算机网络安全的基本技术，指出密码技术是网络安全技术的核心。

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