随着Internet技术的迅猛发展和网络社会化的到来,网络已经无所不在地影响着社会的政治、经济、文化、军事和社会生活等各个方面。同时,在全球范同内,针对重要信息资源和网络基础设施的入侵行为和企图入侵行为的数量在持续增加,这都对国家安全、经济发展和社会生活造成了极大的威胁。因此,网络安全已成为世界各国当今共同关注的焦点。一.网络安全的含义及特征网络安全是指网络系统的硬件、软件及其系统中的数据受到保护,不因偶然的或者恶意的原因而遭受到破坏、更改、泄露,系统连 With the rapid development of Internet technology and the socialization of the Internet, the Internet has affected every aspect of society’s political, economic, cultural, military and social life ubiquitously. In the meantime, there has been a steady increase in the number of intrusions and attempts to invade important information resources and network infrastructures in the global arena, which pose a great threat to national security, economic development and social life. Therefore, network security has become the common focus of all countries in the world today. I. The meaning and characteristics of network security Network security refers to the network system hardware, software and data in the system is protected from accidental or malicious damage, alteration, disclosure, the system with