1. A centralized security system for a computer network comprising a plurality of discrete computer subsystems, each subsystem having a discrete security domain associated therewith, the centralized security system comprising: a plurality of collection agents, each agent being operatively coupled with a respective one of said discrete security domains for collecting differently presented security-related data of said security domains; a collection agent abstraction facility coupled to said collection agents and effective for transforming the differently presented security-related data into a common-format security data which has a format common across said security domains; a database for storing said common-format security data from the collection agent abstraction facility, the database being comprised of a standardized, off-the-shelf database software program; a security controlling facility for examining the security data stored in the database, for ensuring that the security related data in the database indicates that the security domains are in compliance with pre-determined security regulations and for issuing security related common-format commands effective for correcting computer security breach conditions; and a security maintenance software facility for receiving the common format commands and translating them into specific commands that are specific to and understandable by the various security domains.