The OT security market has a conflict of interest problem. Vendors assess your environment using tools that find threats their platform addresses. System integrators follow the framework because deviation creates liability. Neither model produces an honest risk picture.
NEXUS operates without a product to validate or a vendor to protect.
OT Risk Is Not IT Risk
In a corporate IT environment, risk is measured in terms of data confidentiality, integrity, and availability. In an OT environment, the consequences of a successful attack extend to physical process disruption, equipment damage, environmental incident, and human safety. A risk assessment that does not account for these consequences is not an OT risk assessment.
NEXUS conducts OT/ICS risk assessments using the NEXUS Impact-Weighted Risk Model — a methodology that scores every identified risk against both likelihood and operational consequence, across five dimensions: production loss, safety outcome, environmental impact, regulatory exposure, and reputational damage. Unlike CVSS-based scoring, which is calibrated for IT environments, the model is designed to surface the risks that matter most to an OT operator.
Risk Assessment Scope
- Threat modelling specific to your industrial environment and sector
- Asset criticality classification aligned to production priority
- Attack path analysis for identified threat scenarios
- Consequence analysis — cyber event to physical outcome mapping
- Existing control effectiveness evaluation
- Residual risk scoring and treatment options
- Risk register production and ownership assignment
Our Methodology
Deliverables
- OT/ICS threat landscape report for your sector
- Asset criticality register
- Risk register with impact-weighted scoring
- Treatment plan with prioritised recommendations
- Executive summary and board-ready risk dashboard
When the assessment is complete, you will know which risks to act on immediately, which to accept with conditions, and which to escalate to your board with confidence. You will have the language to explain your security posture to leadership — and a treatment plan with clear ownership, not a list of recommendations without a next step.