As we navigate an increasingly complex digital landscape, ensuring human factor security and safety has never been more critical. This groundbreaking book offers an innovative perspective by leveraging behavioral computing to address challenges in human factor security across diverse scenarios. Through comprehensive coverage, the book introduces advanced methods like behavioral modeling and simulation to analyze multimodal behavioral data—spanning structure, language, and vision. These approaches not only deepen our understanding of human behavior but also enable robust solutions to modern security concerns, presenting a new paradigm for safeguarding systems in dynamic environments. Ideal for researchers, professionals, and advanced students in security technologies and behavioral sciences, this work bridges theoretical frameworks with practical applications. Key topics include the evolution of behavioral paradigms, the role of behavioral structures in simulation, and real-world applications in cyberfinance and human factor engineering.