随着信息技术的不断发展,计算机被广泛应用于各个领域,计算机网络也为人们提供了各种便利。作为一个开放性平台,计算机网络拥有众多优势,但同时也存在一定的安全问题,例如计算机病毒、黑客攻击、系统漏洞等。为提高计算机网络的安全性,必须采取有效措施加强对计算机网络安全问题的防范。本文主要深入分析当前计算机网络存在的安全问题,并针对此提出相关的防范对策。 With the continuous development of information technology, computers are widely used in various fields, and computer networks also provide people with various conveniences. As an open platform, the computer network has many advantages, but it also has some security problems, such as computer viruses, hacker attacks, system vulnerabilities and so on. In order to improve the security of computer network, we must take effective measures to strengthen the prevention of computer network security problems. This paper mainly analyzes the security problems existing in the current computer networks, and puts forward some countermeasures against it.