一、前 言信息系统安全包括网络安全、操作系统安全、数据安全、应用安全和管理安全等多方面的内容,其中数据安全是信息系统安全的重要组成部分,数据安全的实施又包括防病毒、数据加密、数据备份与恢复、远程容灾等措施。山东省“金税”和CTAIS系统于2001年全面上线运行,全省国 I. Introduction Information system security includes many aspects such as network security, operating system security, data security, application security and management security. Data security is an important part of information system security. The implementation of data security includes anti-virus, data Encryption, data backup and recovery, remote disaster recovery and other measures. Shandong Province, “Golden Tax” and CTAIS system fully operational in 2001, the province of China