OT Risk Assessment Template
This lesson provides a comprehensive template for conducting risk assessments in OT environments according to ISO 27019 guidance.
Template Purpose
Use this template to systematically assess cybersecurity risks to operational technology in energy utilities.
Risk Assessment Template Components
1. Assessment Scope
Define boundaries and objectives of the risk assessment.
2. Asset Identification
List all OT assets within scope with criticality ratings.
3. Threat Catalog
Document applicable threat actors and scenarios specific to energy sector.
4. Vulnerability Assessment
Identify technical, procedural, and architectural weaknesses.
5. Risk Scenarios
Develop realistic attack scenarios combining threats, vulnerabilities, and assets.
6. Consequence Analysis
Evaluate impact across safety, operational, financial, and compliance dimensions.
7. Likelihood Assessment
Rate probability of each scenario based on threat intelligence and existing controls.
8. Risk Matrix
Calculate risk scores using likelihood × consequence methodology.
9. Risk Treatment Plans
Document mitigation strategies for unacceptable risks.
10. Residual Risk
Assess remaining risk after treatment implementation.
How to Use This Template
- Customize to your organization'''s specific environment
- Involve operations, safety, and security teams
- Update based on threat intelligence
- Review and update at least annually
- Use results to prioritize security investments
This template aligns with ISO 27019, NERC CIP, and other energy sector requirements.
Next Lesson: Implementation checklist for ISO 27019 controls.