STRIDE Threat Model
Build a structured STRIDE threat model in your browser by listing system details, components, entry points, and risk notes across spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege.
Build your threat model
Use this guided worksheet to structure a practical STRIDE review. It helps you think through risks and mitigations, but it does not scan a live system for vulnerabilities.
What this tool does
Start from blank or load a realistic sample system so the STRIDE workflow is easier to understand on the first pass.
1. System or project details
Set the context first so the component review and STRIDE analysis stay grounded in a real system.
List the assets, records, secrets, or workflows that would matter most if exposed or misused.
2. Components and assets
Add the major parts of the system you want to review, then describe which ones are exposed or store sensitive data.
Add the major system pieces you want to review, such as a frontend, backend API, database, admin panel, or third-party provider.
3. Entry points and trust boundaries
List how actors reach the system, where data moves, and which interactions cross trust boundaries.
Add login forms, API calls, admin actions, background jobs, or third-party webhooks to capture where trust boundaries are crossed.
4. STRIDE analysis
Review each component across the six STRIDE categories. Mark whether a threat is present, absent, or still uncertain, then add impact and mitigation notes.
STRIDE analysis is component-first, so start by adding the major parts of the system you want to review.
5. Risk summary and export
Review the threat register, see which STRIDE categories show up most often, and export the worksheet in the format that fits your team.
As soon as you mark threats as Yes or Unsure, the most common STRIDE categories will show up here.
Add at least one component to start generating the review summary.
Threat register
Only threats marked as Yes or Unsure are included in the export-ready register.
Review a component and mark a STRIDE category as Yes or Unsure to create the export-ready threat register.
What STRIDE helps you do
STRIDE is a structured way to think through security threats early, before they become production incidents. It is useful for developers, learners, architects, product teams, and founders who want a cleaner checklist for discussing risk.
STRIDE Threat Model
Use this STRIDE threat model tool to structure a security review in your browser without pretending to scan a live system. It is designed as a practical worksheet for teams who want to think through risks, trust boundaries, and mitigations early in design or delivery.
The page helps you define a system, add components and entry points, review the six STRIDE categories, and export a clean summary. It is useful for developers, students, startup teams, architects, and security learners who want a simple threat modeling tool that stays honest about what it does.
What STRIDE means
STRIDE is a threat modeling framework that helps you look for six common categories of risk: Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.
Spoofing asks whether someone can pretend to be a trusted user or service. Tampering focuses on unauthorized changes to data or requests. Repudiation asks whether actions could happen without reliable logging or accountability. Information Disclosure looks for data leaks. Denial of Service looks at availability and abuse pressure. Elevation of Privilege asks whether a lower-privileged actor could gain stronger access than intended.
What this tool does
This page works as a structured STRIDE threat modeling assistant. You can enter system details, list components and assets, describe entry points or trust boundaries, and then review each component across the six STRIDE categories with threat notes, impact, mitigation, and priority fields.
It also creates a summary section so you can see total reviewed components, identified threats, category counts, missing mitigations, and an export-ready threat register.
What this tool does not do
This is not a vulnerability scanner, penetration testing tool, DAST engine, or live security assessment. It does not crawl a website or probe an API for real flaws. It helps structure your thinking and documentation so you can discuss risks more clearly before or alongside deeper security testing.
How to use the STRIDE Threat Model tool
- Enter the system or project details so the review has context.
- Add the main components and assets you want to assess.
- List important entry points, trust boundaries, or data flows.
- Review each component across the six STRIDE categories.
- Add threat descriptions, impacts, priorities, and mitigations.
- Copy or export the summary in the format your team needs.
Why teams use STRIDE threat modeling
Threat modeling is often most helpful before implementation is locked in. It helps teams talk about trust assumptions, risky flows, sensitive data, and missing controls earlier, when fixes are still easier and cheaper. Even a lightweight review can surface areas that deserve better authorization checks, audit logging, rate limiting, data minimization, or operational monitoring.
A browser-based worksheet is also useful for workshops, architecture reviews, design reviews, and classroom exercises because it gives everyone the same structured checklist without requiring extra tooling.
Frequently Asked Questions
What is a STRIDE threat model?
A STRIDE threat model is a structured way to review a system for six common categories of security risk: Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.
What does STRIDE stand for?
STRIDE stands for Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege.
How do I use STRIDE for threat modeling?
Start by describing the system, then list components, trust boundaries, and entry points. Review each component across the six STRIDE categories and document threats, impacts, and mitigations as you go.
Is this a vulnerability scanner?
No. This page does not scan a live target or verify real vulnerabilities. It is a structured threat modeling assistant for documentation and review.
Can I export my threat model?
Yes. The page is designed to support copy and export actions so you can reuse the worksheet summary in JSON, CSV, Markdown, or a print-friendly format.
Can I use this tool for web apps and APIs?
Yes. It works for web apps, APIs, internal tools, mobile-backed services, cloud systems, and other software workflows where trust boundaries and threats need to be reviewed.
Does this tool save my data online?
No. The intended workflow is frontend-first with local browser storage, so your worksheet stays on the device unless you export it yourself.
Is this STRIDE threat model tool free?
Yes. It is free to use in the browser with no login required.
Category Hub
Related Tools
Daily Inspiration
The pen is mightier than the sword. - Edward Bulwer-Lytton