Organizations rely heavily on the use of information technology (IT) products and services to run their day-to-day activities. Today, Information Technology products and services face insidious threats from advanced malware that, if left unchecked, are designed to penetrate government, corporate, and infrastructure systems to gain control over those systems, rob unsuspecting victims, steal identities, damage reputations, hold us hostage, or worse. Ensuring the security of these products and services is of the utmost importance for the success of an organization. This book introduces the information security principles that organizations may leverage to understand the information security needs of their respective systems.