Tools / Microsoft Threat Modeling Tool (TMT) Interview questions
What is the difference between TMT and OWASP Threat Dragon?
| Microsoft TMT | OWASP Threat Dragon |
| Windows-only desktop app | Cross-platform (web app or Electron desktop) |
| .tm7 JSON format, Microsoft-authored templates | Its own JSON schema, open-source community maintained |
| Rich template-driven rule engine with pre-built SDL rules | Simpler STRIDE prompts per element, extensible but less built-in rule depth |
| Owned and maintained by Microsoft | Owned by the OWASP community, free and open source |
Neither is strictly "better" - TMT's advantage is the depth of its pre-built rule engine and SDL integration, while Threat Dragon's advantage is being cross-platform and git-friendly for teams that want threat models reviewed alongside code.
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