随着计算机在社会生活各个领域的广泛运用,计算机网络不断遭受黑客侵袭、病毒攻击和拒绝服务攻击。据报道,世界各国仅遭受计算机病毒感染和攻击的事件数就以亿计,严重地干扰了正常的人类社会生活,给计算机网络和系统带来了巨大的潜在威胁和破坏。可以预见,随着计算机、网络运用的不断普及、深入,提高计算机网络安全将越来越受到各国的高度重视。 With the widespread use of computers in all fields of social life, computer networks are constantly hacked, virus-attacked and denial-of-service attacks. According to reports, the number of countries in the world suffering from computer virus infection and attacks alone has amounted to hundreds of millions, which seriously interfered with normal human social life and posed tremendous potential threats and sabotage to computer networks and systems. It can be foreseen that with the continuous popularization and deepening of the use of computers and networks, the improvement of computer network security will be paid more and more attention by all countries.