Abstract:In recent years, with the rapid development of Internet technology, network intrusion defense technology is the important topic in the field of Internet security research. In view of the existing electronic countermeasures system lack of existence of network security background logic, results in the decrease of system safety, outer end fracture problem of data monitoring mechanism, electronic countermeasures system network intrusion detection technology is put forward to optimize the research methods. By network electronic data dynamic interaction flow characteristics of the directional technology overflow monitoring algorithm and data integrity, data monitoring mechanism targeted to solve the problems of the existing three major modules. From the root problem of electronic countermeasures system to optimize network intrusion detection technology, through the simulation experiment tests show that the electronic countermeasures system network intrusion detection technology optimization methods with invasion of source monitoring and response speed, high accuracy, strong scalability and good applicability.