Two Basic Problems to Information Classified Security Protection

This paper,based on the social value of information system,points out that business information system service were two elements of social function and that the security of business information system service is not only the protection objects of the information system classified protection,but also the protection objectives.Then,the functions of the business information security and system service security in the information system classification are analyzed in detail.Meanwhile,how to implement the classification protection by using the business information security system service security in specified information system is discussed.Finally,the security attributes of business information and system service are described.