Brantly investigates how states decide to employ cyber in military and intelligence operations against other states and how rational those decisions are. He contextualizes broader cyber decision-making processes into a systematic expected utility?rational choice approach to provide a mathematical understanding of the use of cyber weapons.

Introduction to cyber decision-making -- The key concepts of cyber -- The motivation and utility for covert action -- Digital power -- Anonymity and attribution in cyberspace -- Cyber and conventional operations: the dynamics of conflict -- Defining the role of intelligence in cyberspace -- How actors decide to use cyber -- a rational choice approach -- Cognitive processes and decision-making in cyberspace -- Finding meaning in the expected utility of international cyber conflict -- Appendix A. Power score components and scores -- Appendix B. Modified Economist Intelligence Unit component values -- Appendix C. Affinity scores.