The prime objective behind publishing this book is to increase the awareness on cybersecurity. The chapters are organized incrementally by subject. Chapter One is a brief introduction to basic concepts of systems, information systems, threats, and risk. It also gives a general overview of the terms that are going to be used. Chapter Two presents the overview of application layer security per the OSI model of computer networks. It also discusses several secondary data-storage media and their mechanisms, archival, and retrieval systems. Concerns about intrusion detection systems, virtual...