Abstract: Development and improvement has brought a very great impact to the network technology of the computer, besides the security of the network information has become a focus of the social safety questions. In this paper, through the analysis of security threats to computer network information and protective factors conducted, a strategy for a common computer network information security and protection strategy has been proposed, and useful lessons for our computer network and information security and protection reference have been provided. A series of questions such as security and dependability regarding the computer network system arise, which has been taken into consideration in proposing the strategy. This paper puts forward proposals with respects to the importance of the computer network system, existing problems of the online security of the computer, and precautionary measures. The detailed discussion will help the mass users to become conscious regarding network security and take precautionary measures while using the network.

Keywords: Computer Network, Network Security, Preventive Measures, Security protection system.