This book adopts a 'concise explanation' approach to describe the concepts in the 10 Information Security domains that are covered in the CISSP examination. Hence, this book is a 'quick revision guide' and as such is expected to be studied in the month prior to examination. By breaking down difficult concepts and theories to simple 2 to 4-line sentences the assimilation and most importantly 'recall' of a concept is improved. Hence, this approach helps a candidate to focus on the core concepts before the exams and to recall them and relate them with other concepts to aid in identifying the right answer during the exam. This book is for all aspirants who are planning to take the CISSP examination and obtain the coveted CISSP certification that is considered as the 'Gold Standard' in Information Security personal certification. This book assumes that the candidate has already sufficient knowledge in all the 10 domains of the CISSP CBK by way of experience from work and knowledge gained from other study books. This book provides concise explanations to the core concepts that are essentially covered in the exam. Besides being an Information Security-focused guide, this book will also be useful as a quick reference and revision guide for System and Network Administrators, Database Administrators, System Analysts, Software Developers, Application Designers, System Architects, Legal Professionals, Security Officers, Business Continuity professionals, IT Auditors, IS Auditors, Vulnerability Assessors, Penetration Testers, and Ethical Hackers.