Book chapters are organized in four parts. The first part covers laws that prohibit computer crimes, vulnerabilities of computer systems to crime, computer crime prevention, breaches of physical and personnel security, breaches of communications and data security, characteristics of computer criminals, and jurisdiction over computer crimes. The second part discusses computer crime prevention, with emphasis on threats, vulnerabilities, countermeasures, physical and personnel security, communications security, and operations security. The third part considers how to handle computer crimes in relation to planning, crisis management, investigation, and prosecution. The fourth part deals with computer crime laws, particularly State laws. Appendixes provide additional information on how to prevent computer crimes. References and footnotes