Political science has made progress in the study of how actors behave in cyber-space, but it is still an emerging field. Much of the academic work regarding cyber-space is focused on theory building. There are many scholars who have produced outstanding theories, but the field now needs to move further and begin to collect empirical evidence to determine which theories are more useful than others. This dissertation attempts to do just that. It examines existing theory, and proposes new theories, using evidence from Israel to improve the field's understanding of cyber-space. Israel is one of the most powerful states in cyber-space, but it is woefully understudied. This is the first major book sized project that applies the Israel case to cyber theories. This dissertation is therefore useful not only as a standalone project, but as one that can be useful as a basis for others' work in cyber-space. A central goal of this project is to improve the ability of decision makers to craft good policy. Thus, policy recommendations are offered on every topic with the goal of strengthening state's use of cyber-space both offensively and defensively. The dissertation also addresses two other understudied areas, the behavior of non-state actors in cyber-space, and the role of international law and norms. Using Israel as a case study, this project examines both of those issues. It examines the types of dangers Israel faces from non-state actors and Israel's response, and evaluates what Israel has done well and what it could do better in this regard. The role that norms and international law play in decision making in cyber-space is also explored by examining what Israel's actions and decisions have been. 4