As the internet grows and connects the world in new ways, information security has become significant. The book combines perspectives of the leading researchers in the field of trust management and information security and discusses important theories and practical methods. It presents a holistic view of security management, risk management and the formulation of security policies. The text also presents various security models, information management and security technologies. The legal and privacy issues associated with information management and security are also addressed. This is an essential read for students, experts and professionals alike.