What Is Threat Modeling? The Four Questions, Data Flow Diagrams and Trust Boundaries for the Bookstore Checkout
Threat modeling means asking "what can go wrong?" on a representation of the system before the code is written, and it helps most at design time. With the four questions of the Threat Modeling Manifesto, DFD elements and trust boundaries we model the Bookstore checkout, payment and shipping flow, version the model as JSON in the repo with OWASP Threat Dragon 2.6.2 and tie it to the PR template.
15 Nov 2026
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10 min
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6
