"IT Security and Risk Management" is an original textbook written for undergraduate subjects on IT and e-business security, usually offered under a MIS, IT or eBusiness degree program. The text addresses the business implications and requirements of security rather than presenting a technical, programming approach that is generally aligned to studying computer science. This new text address security technology and systems, issues associated with risk minimization and management when implementing security systems, legal and regulatory requirements, basic Cryptography and Public Key Infrastructure, ethics, forensics and fraud, and the intrinsic relationship between business strategy and security systems, such as electronic payment systems, supply chain management and internal/external firewalls.