OWASP Threat Dragon

OWASP Threat Dragon

OWASP Threat Dragon represents the open-source community's answer to commercial threat modeling tools. As an OWASP project, it benefits from community development and security expertise while remaining free for any use. The tool provides both desktop and web-based versions, enabling flexible deployment options that suit different organizational needs.

Threat Dragon's modern architecture sets it apart from older tools. The web version enables real-time collaboration, essential for distributed teams. Its JSON-based file format integrates better with version control systems than binary formats. The tool supports both STRIDE and CIA (Confidentiality, Integrity, Availability) threat generation approaches, providing flexibility in methodology choice.

The open-source nature provides both advantages and challenges. Organizations can customize Threat Dragon to their specific needs, adding custom threat libraries or integrating with internal tools. The community regularly contributes improvements and bug fixes. However, open-source also means relying on community support rather than vendor guarantees, and feature development depends on volunteer contributions.

Threat Dragon particularly suits organizations with strong open-source commitments or those needing customization beyond what commercial tools offer. Its modern architecture and active development community suggest a bright future, though organizations should evaluate whether community support meets their needs.