This breakthrough book helps you master the management of information security, concentrating on proactive recognition and resolution of practical problems to develop and implement security for the company. The first book to cover the strategic issues of IT security, it helps you to: understand the difference between the more theoretical treatment of information security and operational realities; learn how information security risks that can be measured and then managed, define and implement an information security strategy to design and implement an architecture security, and ensure that limited resources are used optimally.