This document provides an overview of the costs associated with data breaches. It begins by introducing the speakers and the agenda. It then discusses what constitutes a data breach and the types of data that may be exposed, such as PII, PHI, intellectual property, and financial information. The document explores the various direct and indirect costs of a breach for different entities. It provides examples of cost estimates from past breaches, which range from thousands to over $170 million depending on the size and type of breach. Patterns in breach cost data are examined, though correlations are weak. Overall, the document deconstructs the complexities involved in understanding and estimating the full costs of a data breach.