Threat Model

STRIDE threat modeling is a structured methodology that assesses security risks by mapping data flows and identifying trust boundaries to apply the STRIDE framework—Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege—to system components crossing those boundaries.

To conduct a security risk assessment for a new API, you map its data flows, identify ingress points and trust boundaries, apply the STRIDE framework to crossing components, and generate a risk matrix based on likelihood and impact to prioritize mitigation recommendations.

You need to perform threat modeling on system components when new APIs are introduced, authentication methods change, or ingress points are modified, ensuring potential security vulnerabilities and risks are identified and mitigated before deployment.

Yes, you can use STRIDE analysis for existing system data flows and authentication changes by analyzing the modified ingress points, mapping the updated trust boundaries, and evaluating the affected components for vulnerabilities like information disclosure or elevation of privilege.

The best way to prioritize security vulnerabilities identified during threat modeling is to generate a risk matrix that scores threats by likelihood and impact, then use those scores to sequence the mitigation recommendations for the identified STRIDE category risks.

Threat modeling using the STRIDE framework does not require external security frameworks or vulnerability management tools, as it independently analyzes system components, maps data flows, and generates risk matrices with mitigation recommendations based solely on the provided architecture details.