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Threat model

Threat Model Checklist for Software Development Organizations

1. *Define the Scope

Identify the specific application or system to be analyzed for threats.

Determine the boundaries and interfaces of the system.

Clearly define the goals and objectives of the threat modeling process.

2. *Gather Information

Collect all available documentation, such as system architecture diagrams, design specifications, and threat model templates.

Understand the business requirements, user roles, and expected functionality of the system.

Identify potential external dependencies, including APIs, libraries, or third-party services.

3. *Identify Assets

Identify and document the critical assets within the system, such as sensitive data, intellectual property, or key infrastructure components.

Categorize assets based on their importance and potential impact if compromised.

Determine the asset owners and their responsibilities for protecting the assets.

4. *Identify Threats and Attack Vectors

Brainstorm potential threats and attack vectors that could exploit vulnerabilities in the system.

Consider common attack techniques like injection attacks, cross-site scripting (XSS), or privilege escalation.

Review past security incidents, industry best practices, and known vulnerabilities to identify specific threats.

5. *Evaluate Vulnerabilities

Analyze the system architecture and design to identify potential vulnerabilities.

Assess the effectiveness of existing security controls and countermeasures.

Consider potential vulnerabilities arising from misconfigurations or insecure coding practices.

6. *Prioritize Threats

Prioritize threats based on their likelihood of occurrence and potential impact on the system.

Consider the ease of exploitation and the expected value for attackers.

Consult stakeholders and subject matter experts to validate the prioritization.

7. *Propose Countermeasures

Define and document appropriate countermeasures for identified threats.

Consider both preventive and detective controls, such as access controls, encryption, or intrusion detection systems.

Evaluate the cost-effectiveness and feasibility of proposed countermeasures.

8. *Implement Countermeasures

Translate the proposed countermeasures into actionable development tasks.

Assign responsible individuals or teams for implementing each countermeasure.

Ensure that the countermeasures align with the development schedule and resource availability.

9. *Monitor and Review

Regularly monitor the effectiveness of implemented countermeasures.

Conduct periodic vulnerability assessments or penetration testing to identify new threats.

Review and update the threat model whenever there are significant changes to the system or its environment.

10. *Document and Communicate

Document the threat model, including the identified threats, countermeasures, and their implementation status.

Communicate the threat model findings and recommendations to relevant stakeholders.

Ensure that the threat model documentation is maintained and easily accessible for future reference.

Note: The order of these steps may vary depending on the specific threat modeling methodology or framework adopted by the organization.

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