Role of security audit in information security strategies

Network intrusion will bring disastrous consequences to information system.In order to reduce the risk of network intrusion and ensure the security of informations system,information system aduit can be adopted to analyze the security of information system.Information security audit is not only the effective development of information security technology,but also the important strategy complement of auxiliary response,risk of information system and rating protection.This paper elaborates the primary role of information security audit,and analyzes its necessity and its realization method from a technical point of view,so that the security of information system can be ensured.