Dive into a participatory conference talk from AppSec California 2016 that demystifies threat modeling. Explore the essential aspects of security assessment in system development, including risk evaluation, architectural decomposition, and appropriate architectural views. Engage with Distinguished Engineer Brook Schoenfield as he unravels the complexities of threat modeling, transforming it from a "black art" into an accessible practice. Gain insights into secure software development, security architecture, and the importance of context in threat assessment. Learn about various architectural components, message flows, and threat matrices while understanding the significance of business intelligence and identity services in the process. Discover how to approach input validation and configuration in the context of threat modeling for e-commerce and extranet systems.