15. A reputation system operable to receive a communication directed to a network and to assign a reputation to the communication, the system comprising: a communications interface operable to receive communications entering a network from a first entity; a communication analyzer operable to derive one or more attributes associated with the received communication including the first entity associated with the origination of the message; a correlation module operable to retrieve known attribute information from a system data store and to compare the derived attributes from the received communication with known attribute information to identify a relationship between the first entity and one or more other entities, the correlation module being further operable to identify new attribute information and incorporate new attribute information into the system data store and communication analyzer; wherein the system data store is operable to store known attribute information associated with a plurality of entities comprising the one or more entities from which a reputation system has previously received messages; and a reputation assignment module operable to use the identified relationship to attribute at least a portion of a first reputation associated with one of the first or the one or more other entities with a second reputation associated with the other of the first or the one or more other entities.
15. A reputation system operable to receive a communication directed to a network and to assign a reputation to the communication, the system comprising: a communications interface operable to receive communications entering a network from a first entity; a communication analyzer operable to derive one or more attributes associated with the received communication including the first entity associated with the origination of the message; a correlation module operable to retrieve known attribute information from a system data store and to compare the derived attributes from the received communication with known attribute information to identify a relationship between the first entity and one or more other entities, the correlation module being further operable to identify new attribute information and incorporate new attribute information into the system data store and communication analyzer; wherein the system data store is operable to store known attribute information associated with a plurality of entities comprising the one or more entities from which a reputation system has previously received messages; and a reputation assignment module operable to use the identified relationship to attribute at least a portion of a first reputation associated with one of the first or the one or more other entities with a second reputation associated with the other of the first or the one or more other entities. 19. The system of claim 15 , wherein the reputation assignment module is operable to determine what portion of the reputation of a first or one or more other entities to assign to the reputation of the other of the first or one or more other entities based upon the identified relationship.