0引言伴随现代信息技术的发展,计算机网络已经向各个领域渗透。信息社会的发展,使得人们更加依赖网络,但网络安全问题也逐渐暴露出来。在网络发展的良好形势下,网络安全成为重要制约因素。尽管我国计算机制造业进步飞快,但核心部件制造技术依然比较薄弱,使得计算机网络安全受到威胁。本文主要分析网络安全问题产生的主要原因,并提出防护措施。1计算机网络安全问题产生原因1.1间谍软件与垃圾邮件间谍软件不同于计算机病毒,其主要意图不在于破坏系统,而是窃取用户信息或系统信息;由于电子邮件系统和地址具有可 0 Introduction With the development of modern information technology, computer networks have penetrated into all fields. The development of the information society makes people rely more on the network, but the issue of network security is also gradually exposed. In the good situation of network development, cyber security has become an important constraint. Although China’s computer manufacturing industry has progressed rapidly, the manufacturing technology of core components is still relatively weak, making the computer network security threatened. This article analyzes the main reasons for the network security problems, and puts forward protective measures. 1 Computer network security problems cause 1.1 spyware and spam Spyware is different from the computer virus, the main intention is not to damage the system, but to steal user information or system information; the e-mail system and address can be