安全保障能力是新世纪一个国家的综合国力、经济竞争实力和生存能力的重要组成部分。网络面临的安全威胁大体可分为两种 :一是对网络数据的威胁 ;二是对网络设备的威胁。这些威胁来源于各种因素 ,也可能是外部和内部人员的恶意攻击。它是电子商务、政府上网工程等顺利发展的最 Security assurance capability is an important part of a country’s overall national strength, economic competitiveness and viability in the new century. Network security threats can be broadly divided into two types: First, the threat to the network data; Second, the threat of network equipment. These threats come from a variety of factors and can also be malicious attacks by outsiders and insiders. It is the most successful development of e-commerce, government Internet projects