The culture of cybersecurity is a complex subject. We can look at cybersecurity culture from different perspectives. We can look at it from the organizational point of view or from within the culture. Each organization has a culture. Attitudes toward security have different manifestations in each organizational culture. We also see how the cybersecurity phenomenon unfolds in other cultures is complicated. Each culture reacts differently to this phenomenon. This book will emphasize both aspects of cybersecurity. From the organizational point of view, this book will emphasize the importance of the culture of cybersecurity in organizations, what it is, and how it can be achieved. This includes the human aspects of security, approach and awareness, and how we can design systems that promote the culture of security. It is also important to emphasize the psychological aspects briefly because it is a big part of the human approach. From a cultural point of view, this book will emphasize how different cultures approach the culture of cybersecurity. The cultural complexity of cybersecurity will be noted by giving examples from different cultures. How leadership in different cultures approach security and how different cultures approach change. Case studies from each culture will be presented to demonstrate different approaches to implementing security and training practices. Overall, the textbook will be a good resource for cybersecurity students who want to understand how cultures and organizations within those cultures approach security. It will also provide a good resource for instructors who would like to develop courses on cybersecurity culture. Finally, this book will be an introductory resource for anyone interested in cybersecurity's organizational or cultural aspects.