OT Maturity: How to Assess, Understand, and Strengthen Industrial Cybersecurity

By Elías Cedillo Hernández
CEO & Founder of Grupo BeIT, BuróMC and Elit Infrastructure Services

In an environment where industrial operations are increasingly interconnected, OT (Operational Technology) cybersecurity has become a key pillar for business continuity. The IEC 62443 standard establishes guidelines to protect Industrial Automation and Control Systems (IACS). But how can an organization determine its current risk level and what actions should be taken?

In this blog, we explain three key components of the process:

1. OT Maturity Assessment
2. Risk Analysis
3. OT Cybersecurity Roadmap Development

1. OT Maturity Assessment: The 8 Domains That Reveal Your Current State

OT maturity is evaluated through 8 domains that provide visibility into the level of protection, processes, controls, and organizational capabilities in place. These domains serve as a starting point to identify gaps, priorities, and risks.

The 8 typical domains are:

1. Strategic

Risk assessment, strategic planning, and organizational maturity to manage OT security.

2. Assets

Inventory, classification, and status of OT assets, including lifecycle, criticality, and updates.

3. Risks

Identification and analysis of threats, vulnerabilities, and their impact on operations.

4. Access

User management, authentication, remote access, and permissions within OT systems.

5. Management

Internal processes, roles, and responsibilities related to secure operations.

6. Operations

Operational controls such as OT monitoring, UTM, OT SOC, segmentation, incident detection, and response.

7. Organization

Internal structure, culture, trained personnel, governance, and awareness initiatives.

8. Continuity

Contingency plans, backups, redundancy, recovery strategies, and measures to ensure operational resilience.

The goal?

To obtain a clear and measurable diagnosis of the current state of industrial cybersecurity.

2. OT Risk Analysis: Prioritizing What Truly Matters

Once the initial maturity level is understood, the next step is to calculate the level of risk affecting critical assets by considering both probability and impact.

Risk analysis helps identify:

• Which threats may materialize
• How likely they are to occur
• The potential damage they could cause

This process supports informed decision-making and effective remediation strategies.

Risk Analysis Criteria

Impact (1 to 5)

1. Insignificant
2. Minor
3. Moderate
4. Severe
5. Critical

Probability (1 to 5)

1. Rare
2. Unlikely
3. Possible
4. Likely
5. Very Likely

Risk Equation

Risk = Impact × Probability

• 1–4 = Low
• 5–9 = Medium
• 10–16 = High

The key deliverable is a threat assessment report that highlights areas of highest exposure and defines protection priorities.

3. OT Roadmap: The Path to Cybersecurity Maturity

With both the maturity assessment and risk analysis executed, a progressive roadmap is developed to organize and prioritize actions over time to strengthen industrial systems.

Roadmap Phases

Short term (0–6 months)

Initial controls, basic visibility, and establishment of governance foundations.

Medium term (6–18 months)

Process standardization, formalization, and capability strengthening.

Long term (18–36 months)

Optimization, automation, and comprehensive operational resilience.

Levels and Purpose

The roadmap enables the organization to progress in a measurable and strategic way toward greater maturity and security.

OT Cybersecurity Requires Method, Vision, and Strategy

Protecting industrial systems is not a one-time project—it is an ongoing process.
A proper combination of maturity assessment, risk analysis, and a well-defined roadmap allows organizations to:

• Understand their real cybersecurity posture
• Prioritize investments and efforts
• Reduce vulnerabilities
• Improve operational availability
• Build long-term resilience

If your organization is looking to strengthen its OT cybersecurity posture, these three components are the ideal starting point.