OT Cybersecurity Risk Assessment
Prioritize cybersecurity risks with operational context
A risk assessment explains which security gaps matter most and why. It connects realistic threat scenarios, the assets they affect, the safeguards already in place and the operational consequences that would follow.
- Sheet
- Service sheet
- Service
- OT Cybersecurity Risk Assessment
- Scope areas
- 8
- Potential deliverables
- 5
- Engagement
- Scoped to you
In short
OT cybersecurity risk is assessed by describing credible scenarios in which a threat exploits a weakness, estimating the operational consequence and its likelihood given existing safeguards, and recording a rating with its rationale so that treatment decisions can be made and reviewed.
The challenge
A list of findings is not a priority list. Ten gaps may be technically similar but have very different consequences depending on which process they affect and what other safeguards exist.
Engineering and management also need to understand risk in their own terms — safety, production, environment and compliance — rather than in terms of vulnerability scores alone.
Scope and activities
The method is adapted to your existing risk management framework where one exists.
Risk scenarios and assumptions
Credible scenarios built around your systems, threat sources and entry points, with stated assumptions.
Consequence categories
Potential impact on safety, availability, integrity, confidentiality and the environment.
Likelihood and impact criteria
Defined, agreed scales so ratings are consistent and explainable.
Risk ratings and rationale
A rating for each scenario together with the reasoning behind it.
Existing safeguards
Technical, procedural and engineered protections that reduce likelihood or consequence.
Treatment options
Reduce, avoid, transfer or accept, with realistic actions for each scenario.
Risk ownership
Named owners who decide on treatment and accept residual risk.
Corrective action planning
Actions linked to the risks they address, with priority and dependencies.
Potential deliverables
Final deliverables depend on the agreed engagement.
- Risk methodologyCriteria, scales and assumptions agreed with your stakeholders.
- Scenario catalogueDocumented scenarios relevant to your environment.
- Risk registerRatings, rationale, safeguards and owners.
- Treatment planRecommended treatments and corrective actions.
- Management summaryTop risks and decisions required, in business terms.
Engagement approach
Frame
Agree scope, consequence categories, rating criteria and alignment with corporate risk management.
Identify
Develop scenarios with engineering, operations and security stakeholders.
Evaluate
Assess likelihood and consequence, taking existing safeguards into account.
Treat
Define treatment options and corrective actions with owners.
Review
Present results and agree how the register will be maintained.
Assumptions and limitations
- Risk ratings are structured expert judgments based on agreed criteria; they are not objective measurements.
- No assessment eliminates risk. The goal is informed, documented decisions.
- Safety consequences are considered in coordination with your process safety function, not in place of it.
- Risk acceptance decisions remain with the asset owner.
What helps us get started
- Asset inventory and architecture information
- Results of any recent security assessment
- Existing corporate risk criteria, if available
- Process and safety context from engineering and operations
Sensitive material is exchanged only after an engagement is agreed, using a method we agree with you — never through the website form.
Questions about OT Cybersecurity Risk Assessment
How is OT cybersecurity risk assessed?
By defining credible threat scenarios, identifying the assets and weaknesses involved, considering existing safeguards, and estimating consequence and likelihood against agreed criteria. Each rating is documented with its rationale.
How is OT risk different from IT risk?
OT risk puts physical consequences first: safety, environmental impact and loss of production. Availability and integrity usually matter more than confidentiality, and treatment options are constrained by maintenance windows and legacy systems.
Can you use our corporate risk matrix?
Yes, and that is usually preferable. Aligning with existing criteria makes OT cyber risks comparable with other business risks.
Is this the same as an IEC 62443-3-2 risk assessment?
It can follow IEC 62443-3-2 concepts, including zones and conduits and target security levels, when that is the agreed objective. We confirm the method during scoping.
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Talk to us about OT Cybersecurity Risk Assessment
Share your objectives and constraints. We'll help you define a scope that fits your operations.