A method and system for maintaining a self-updating security information repository. A plurality of types of security information are stored in a corresponding plurality of information storage units, such as database tables. A plurality of configuration files respectively associated with the information storage units are stored, and each configuration file includes update parameters of the associated information storage unit. Each information storage unit is periodically automatically updated based on its update parameters. The information storage units can be searched to return security information of different types in one search.