Dethernety vs IriusRisk

Dethernety is an open-source threat modeling platform that represents architecture as a graph for building and analyzing system models. Teams can create and explore models in a browser, from code, or from reports. Analysis follows the architecture graph to examine attack paths, blast radius, and residual risk. Exposures map to MITRE ATT&CK techniques and controls to D3FEND countermeasures for coverage-gap analysis. The platform has JavaScript and TypeScript modules for design, analysis, and issues, plus an OPA/Rego policy engine. Issue modules can connect to external trackers and synchronize remediation work in both directions. Users host their own graph database, with Neo4j and Memgraph listed as options. Analysis can use deterministic queries, single-agent AI acceleration, or multi-agent LangGraph workflows. The open-source edition runs on user-controlled infrastructure and can operate fully offline without cloud calls. The maker says models, data, and findings remain on that infrastructure, and that there is no background telemetry or usage-data transmission. The GUI is aimed at security teams; the CLI supports DevOps, CI/CD automation, and threat-model-as-code. Open Source is free; Enterprise is self-hosted with contract pricing and dedicated support.

IriusRisk is an AI threat-modeling tool for planning secure software design. It helps teams build threat models, identify threats and countermeasures, and surface vulnerabilities and compliance gaps. Its Jeff AI Assistant can turn user stories, documentation, meeting transcripts, or code into a diagram showing threats and security controls. A built-in knowledge base supports applying standards such as PCI DSS, NIST, and GDPR, marking aligned countermeasures as required. Integrations include Jira, ServiceNow, Azure DevOps, Jenkins, GitHub, OWASP ZAP, Terraform, AWS CloudFormation, and Open API; users can also import diagrams from draw.io, Visio, Lucidchart, and Microsoft Threat Modeling Tool. The free Community Edition costs nothing and allows one user and three active threat models. Enterprise has no listed price and is offered as SaaS or on-premise. IriusRisk says its cloud services are not designed or certified for certain sensitive data, including PHI and GDPR special category data.