Abstract: With the prevalence and development of computer and information technology, financial industry continues to reform and innovate itself as other industries do. In order to be adapted to the needs of social and economic development, information technology changes its traditional accounting mode, making itself more effective and more accurate. But meanwhile, the complex internet environment and the special characteristics of the financial information pose new threat to the financial security, which is likely to impact the financial safety and therefore hinder the development of the whole industry. This paper focuses on the significance of the maintenance of software and hardware with regard to the security management, illustrated by the example of finance department in a key university