随着计算机技术的发展,计算机网络已应运而生并变得日益重要。但是,网络有其自身的的缺陷,容易被攻击,所以我们在运用计算机时应采取必要的措施,对攻击对象采取防范。本文就计算机网络安全受到威胁进行了分析,并提出了一系列技术性的防范措施。 With the development of computer technology, computer networks have emerged and become increasingly important. However, the network has its own flaws and is easily attacked. Therefore, when using the computer, we should take the necessary measures to guard against the target. This paper analyzes the threat of computer network security and puts forward a series of technical preventive measures.