计算机网络的不断发展,使得信息化逐渐成为了发展趋势,计算机网络在不断发展过程中给人们的生活带来了很大的便利,同时由于计算机网络联接形式的多样性和网络的开放性也使得计算机网络成为了网络黑客和病毒攻击的主要目标。人们在使用计算机网络的时候对信息的安全性和保密性要更加重视。 The continuous development of computer network, making the information has become a trend of development, computer networks in the continuous development of people’s lives has brought great convenience, at the same time as the form of computer network connectivity and network openness also makes Computer networks have become the main targets of network hacking and virus attacks. People pay more attention to the security and confidentiality of information when using the computer network.