网络战争、信息战争已经成为21世纪各国战争防御的新型媒介,由此可见,建立安全的计算机网络信息环境已经刻不容缓。本文针对目前计算机网络信息安全的存在的主要问题及网络攻击的种类、病毒侵入方式进行了系统分析并制定了有效的安全防范策略,对提升计算机网络系统安全,构建和谐、稳定、快速的网络运营环境有积极有效的促进作用。 Cyber ​​warfare and information warfare have become the new media of defense in various countries in the 21st century. Thus, it is imperative to establish a secure computer network information environment. In this paper, the main problems of computer network information security and the types of network attacks and virus intrusion are systematically analyzed and effective security strategies are formulated. In order to improve the security of computer network system and build a harmonious, stable and rapid network operation The environment has a positive and effective role in promoting.