The international handbook of computer security is written primarily to help business executives and information systems/computer professionals protect computer systems and data from a myriad of internal and external threats. The book addresses a wide range of computer security issues. It is intended to provide practical and thorough guidance in the quagmire of computers, technology, networks, and software. Among the major topics discussed are : company security policies, data preservation and protection, personnel management and security, legal and auditing planning and control, network security, internal and external systems, physical security procedures, hardware and software protection, contingency planning