STRIDE Threat Modeling Application

Executive Summary

This application facilitates threat modeling using the STRIDE framework (Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege). It helps security teams identify critical assets, define threats, assess impacts, propose mitigations, and document findings. Results are stored in a dynamic threat table, importable and exportable to Excel, with an Action Log to track activities, ensuring a structured approach to securing systems.

1. Preparation

Prepare the organization for a comprehensive threat modeling process.

• Define the scope (e.g., application, network, cloud services).
• Assemble a team including developers, architects, and security experts.
• Understand STRIDE categories: Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege.
• Prepare tools for documentation (this app’s threat table will store results).

2. Asset Identification

Identify critical assets to be protected.

• List systems, components, data, or processes (e.g., user database, API endpoints).
• Document asset details in the form below.

3. Threat Identification (STRIDE)

Identify threats using the STRIDE model.

• Spoofing: Impersonating a user or system (e.g., fake login).
• Tampering: Unauthorized data modification (e.g., altering database records).
• Repudiation: Denying actions without proof (e.g., unlogged transactions).
• Information Disclosure: Exposing sensitive data (e.g., unencrypted emails).
• Denial of Service: Disrupting availability (e.g., DDoS attacks).
• Elevation of Privilege: Gaining unauthorized access (e.g., exploiting vulnerabilities).
• Specify threats and attack vectors in the form below.

4. Impact Analysis

Analyze the potential impact of each threat.

• Assign Impact (Low/Medium/High) based on harm to confidentiality, integrity, or availability.
• Describe potential consequences in the form below.

5. Mitigation Planning

Define mitigations to address each threat.

• Identify existing controls (e.g., authentication, logging).
• Propose new mitigations (e.g., encryption, rate limiting).
• Specify implementation plans (e.g., owner, timeline).
• Document mitigations in the form below.

Notify Stakeholders

• Coordinate with relevant parties for mitigation implementation.
• Use a professional tone and log communications. Example:
  Subject: Threat Modeling Coordination Request Dear [Stakeholder Contact], We are conducting a STRIDE-based threat modeling exercise and have identified a threat to [asset/component], categorized as [STRIDE category, e.g., Spoofing]. The potential impact includes [brief impact description, e.g., unauthorized access]. Proposed mitigations include: - [e.g., Implement multi-factor authentication] - [e.g., Enhance logging mechanisms] Please confirm these actions or suggest alternatives by [deadline]. Contact us for further details. Best regards, [Your Name] [Your Organization] [Contact Information]
  Copy to Clipboard
• Log notifications in the Action Log below.

Threat Modeling Form

Threat Table