Thomas Holt is an Associate Professor in the School of Criminal Justice, Michigan State University, USA. He has published extensively on cybercrime and cyberterror, and has received multiple grants from the National Institute of Justice and the National Science Foundation to examine malware writers, data thieves, and hackers using on-line data. Olga Smirnova is an Assistant Professor at the MPA program, Political Science Department, East Carolina University, USA. Her research interests include social networks, institutional stability, economic development, performance measurement, and visualizations of complex systems. She teaches various courses at graduate and undergraduate levels, including economic development, public budgeting, and professional papers. Yi Ting Chua is a PhD student in the School of Criminal Justice, Michigan State University, USA. Although gender and criminal justice systems have been her primary interests, she is also interested in how policing, domestic violence, and comparative criminal justice interact with the dynamics between gender and criminal justice.

• Chapter 1. Introduction.- Chapter 2. The Marketing and Sales of Stolen Data.- Chapter 3. The Economic Impact of Stolen Data Markets.- Chapter 4. The Social Organization of Actors in Stolen Data Markets.- Chapter 5. Visualizing The Networks of Economic Transactions and Ads in Stolen Data Markets.- Chapter 6. Implications and Conclusions.