Computer Data Security Management System

With data in people's lives becoming more and more important, its security also has been emphasized by people. Because a lot of data were leaked due to people who had authority to read or write them, how to solve this kind of data leaking is badly in need of being solved now. At present, people usually use combination of hardware and software to solve this problem, but this kind of method is too expensive to spread. Another kind of way that uses software to solve the problem protects data only in specific domain so that the way is not as safe as we think.Based on these situations, security of data in computer system is put forward. Using technology of file system filter driver virtual device driver and three level interfaces provided by windows, the system protects data in computer very well.The research work mentioned in the paper is mainly about:(1) Researched the development and importance of protection to data in computer.(2) Studied the relative technology, including windows operating system driver especially WDM driver, filter driver in WDM level, data structure in WDM driver and windows operating system network system structure and etc.(3) Security of data in computer system is put forward and system frame design, function design, principle and method of core modules implement are all mentioned.(4) System tests and analyzes are complemented.(5) At last proposed further goal and direction.