With the rapid development of network techniques, computer virus has gradually become the main threat to cyber security. In recent years, network attack happens frequently and scale enlarges, furthermore network attack has transformed from attacking personal computers to hacking the important information system and the nation’s network instruments. By analyzing the Flame Virus, this article researched from the aspects of spread, start, attack, prevention and proposed relevant advises and strategy for network security.% 随着网络技术的飞速发展，计算机病毒逐渐成为网络安全领域的主要威胁。近年来，网络攻击事件频繁发生，并且规模逐渐增大，已经从传统意义上对个人电脑的攻击演变成对国家网络基础设施及重要信息系统的攻击。文章通过对“火焰”病毒的分析，分别从传播、启动、攻击、防范等方面进行研究，并提出对网络安全防护的相关建议和对策。
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