Introduction

Operational Technology (OT) has become increasingly connected with enterprise IT networks, cloud platforms, remote-access solutions, industrial applications, and other digital systems. Industrial equipment that was once isolated can now exchange data, receive remote commands, support predictive maintenance, and integrate with broader business environments.

This connectivity creates significant operational benefits, but it also expands the cybersecurity attack surface.

A vulnerability in an industrial controller, embedded device, engineering workstation, remote-access interface, or connected industrial product could potentially affect production, availability, data, and operational processes.

The EU Cyber Resilience Act (CRA) introduces cybersecurity requirements for products with digital elements made available on the European Union market. The Regulation requires manufacturers to assess cybersecurity risks associated with applicable products and take the assessment results into account across planning, design, development, production, delivery, and maintenance. The risk assessment must also be documented and updated as appropriate during the product’s support period.

For industrial manufacturers, OT cybersecurity assessment can provide a structured way to identify vulnerabilities, evaluate attack paths, review security controls, and strengthen product and operational security as part of a broader CRA compliance-readiness programme.

Understanding the CRA and Its Relevance to OT Environments

The CRA applies to products with digital elements whose intended purpose or reasonably foreseeable use involves a direct or indirect logical or physical data connection to a device or network.

This is particularly relevant to connected industrial equipment because modern products may contain:

• Embedded operating systems
• Firmware
• Industrial communication interfaces
• Network connectivity
• Web-based management interfaces
• APIs
• Remote-access functionality
• Cloud connectivity
• Wireless interfaces
• Third-party software components

The CRA requires manufacturers to undertake cybersecurity risk assessments and use the results to minimise cybersecurity risks, prevent incidents, and reduce their potential impact, including impacts relating to the health and safety of users.

The Regulation also requires manufacturers to document the cybersecurity risk assessment and include it in the applicable technical documentation.

For OT environments, this means cybersecurity needs to be considered not only at the network level but also at the product, device, software, communication, and lifecycle levels.

Why OT Cybersecurity Assessment Is Important for Industrial Equipment

Industrial environments require a different approach to cybersecurity because security controls must often be evaluated alongside availability, safety, reliability, and operational requirements.

An OT cybersecurity assessment helps organizations understand how vulnerabilities could affect industrial equipment and the systems connected to it.

1. Identify OT-Specific Vulnerabilities

Industrial equipment may contain vulnerabilities involving:

• Firmware
• Embedded software
• Industrial protocols
• Network services
• APIs
• Wireless communication
• Third-party components

Identifying these weaknesses helps organizations prioritize remediation before vulnerabilities can be exploited.

2. Assess Industrial Attack Surfaces

An OT assessment can identify potential entry points across the industrial environment.

These may include:

• Engineering workstations
• Human-machine interfaces (HMIs)
• Programmable logic controllers (PLCs)
• Remote-access systems
• Industrial gateways
• Cloud-connected equipment
• Maintenance interfaces

Understanding the complete attack surface allows security teams to evaluate how an attacker could potentially move from one component to another.

3. Evaluate IT-OT Connectivity

Convergence between IT and OT can introduce additional pathways for attackers.

An assessment can examine:

• IT-OT network boundaries
• Segmentation
• Firewall configurations
• Remote access
• Administrative privileges
• Third-party access

This helps organizations identify weaknesses that could enable an attacker to move between enterprise and industrial environments.

4. Protect Operational Continuity

Security testing in OT environments must consider operational impact.

A cybersecurity assessment should therefore be planned carefully to avoid unnecessary disruption to production systems.

The objective is to identify security weaknesses while maintaining appropriate controls around operational availability and safety.

Our Methodology for OT Cybersecurity Assessment Under the EU Cyber Resilience Act

Cyberintelsys follows a structured, risk-based methodology for evaluating OT environments and industrial equipment. The assessment approach can be adapted according to the product architecture, operational environment, connectivity, threat exposure, and business impact.

1. Scope and Asset Discovery

The assessment begins with understanding the industrial environment and identifying relevant assets.

The scope may include:

• Industrial equipment
• PLCs
• HMIs
• SCADA systems
• Engineering workstations
• Industrial servers
• IoT devices
• Cloud-connected systems

Asset identification provides the foundation for understanding the environment’s attack surface.

2. Architecture and Network Review

The OT architecture is reviewed to understand communication paths, trust relationships, segmentation, and connections between industrial and enterprise environments.

The review can identify:

• Insecure network paths
• Excessive connectivity
• Misconfigured security controls
• Potential lateral movement paths

For organizations requiring deeper architectural analysis, Cyberintelsys also offers Network Architecture Security Review.

3. OT Risk Assessment

The assessment considers the potential consequences of compromising industrial equipment.

Risk factors may include:

• Product functionality
• Operational dependency
• Connectivity
• Sensitive information
• Availability requirements
• Safety considerations
• User access
• Remote administration
• Third-party access
• Expected product lifetime

The CRA specifically requires the cybersecurity risk assessment to consider the intended purpose, reasonably foreseeable use, operational environment, assets to be protected, and expected period of use.

4. Vulnerability Assessment

Technical security testing can identify vulnerabilities across industrial assets and connected systems.

Assessment activities may identify:

• Known vulnerabilities
• Outdated software
• Weak configurations
• Insecure protocols
• Exposed services
• Weak authentication
• Access-control weaknesses
• Unnecessary privileges
• Vulnerable components

Where appropriate, findings are validated to distinguish practical security risks from false positives.

5. OT Penetration Testing

Controlled penetration testing can be used to validate whether identified vulnerabilities could realistically be exploited.

Testing may cover:

• Network services
• Authentication
• Authorization
• Remote access
• Web interfaces
• APIs
• Industrial gateways
• Connected devices
• Supporting infrastructure

Cyberintelsys provides OT Security Testing for organizations requiring specialized security assessment of operational technology environments.

Testing is carefully scoped according to the operational sensitivity of the environment.

6. ICS and SCADA Security Assessment

Where industrial control systems are within scope, specialized assessment can evaluate the security of ICS and SCADA environments.

This can include assessment of:

• SCADA servers
• HMIs
• PLC communication
• Engineering workstations
• Industrial network architecture
• Remote connections
• Access controls
• Configuration weaknesses

Cyberintelsys provides ICS/SCADA Security Assessment to support organizations assessing these environments.

7. Firmware, Software, and Component Security

Industrial equipment may depend on firmware, operating systems, open-source libraries, and third-party components.

The CRA requires manufacturers to exercise due diligence when integrating third-party components so that those components do not compromise the cybersecurity of the product.

Where source code is available, Source Code Review can complement external security testing by identifying weaknesses within application or embedded software.

8. Remediation and Retesting

Identified vulnerabilities should be prioritized according to technical severity, exploitability, and potential operational impact.

Following remediation, retesting can verify whether the implemented security fixes have effectively addressed the identified weaknesses.

This supports a continuous security lifecycle:

Identify → Assess → Remediate → Retest → Improve

Cyberintelsys OT Cybersecurity Services

Cyberintelsys provides security assessment services that can be combined according to the industrial environment and product architecture.

1. OT Security Testing

OT Security Testing focuses on identifying security weaknesses within operational technology environments while considering the requirements of industrial operations.

2. ICS/SCADA Security Assessment

ICS/SCADA Security Assessment helps organizations evaluate industrial control and supervisory environments for cybersecurity weaknesses.

3. IoT Security Testing

Industrial environments increasingly contain connected sensors, gateways, and embedded devices. IoT Security Testing can assess these connected components and their communication with other systems.

4. Network Penetration Testing

Network Penetration Testing can evaluate network exposure, segmentation, authentication, services, and potential attack paths.

5. Web Application Penetration Testing

Industrial equipment may include browser-based dashboards and management interfaces. Web Application Penetration Testing can assess these interfaces for security vulnerabilities.

6. API Penetration Testing

Connected industrial products may rely on APIs for communication with cloud platforms and applications. API Penetration Testing can assess API authentication, authorization, data exposure, and other security risks.

7. Cloud Penetration Testing

For industrial equipment connected to cloud services, Cloud Penetration Testing can help identify vulnerabilities within supporting cloud infrastructure and services.

Why Choose Cyberintelsys for CRA-Focused OT Security Assessment?

1. CREST-Approved Security Testing

Cyberintelsys is listed by CREST for Vulnerability Assessment and Penetration Testing, providing independently recognized assurance around security-testing capabilities.

2. OT and Industrial Security Expertise

Our assessment capabilities cover ICS, SCADA, industrial networks, IoT devices, and connected operational environments.

3. Risk-Based Testing

We adapt testing to the operational characteristics of the environment, considering safety, availability, business impact, and potential physical consequences.

4. Compliance-Focused Reporting

Our reports connect technical findings with relevant cybersecurity and compliance requirements, helping security and compliance teams prioritize remediation.

5. Remediation and Retesting

After vulnerabilities are addressed, retesting can validate whether remediation measures have effectively reduced the identified security risks.

Contact Cyberintelsys

The growing convergence of IT and OT has made industrial equipment more connected—and potentially more exposed to cyber threats.

The EU Cyber Resilience Act (CRA) places greater emphasis on cybersecurity throughout the lifecycle of products with digital elements. For manufacturers of connected industrial equipment, this makes cybersecurity risk assessment, vulnerability management, security testing, and continuous security improvement increasingly important.

An OT cybersecurity assessment can help organizations identify vulnerabilities across industrial equipment, network architecture, ICS/SCADA environments, embedded systems, remote-access solutions, and connected technologies.

By combining CRA-focused risk assessment with specialized OT security testing and CREST-approved VA and PT capabilities, Cyberintelsys can support organizations in strengthening industrial cybersecurity as part of their broader CRA compliance-readiness programme.Strengthen your industrial equipment security with a structured OT Cybersecurity Assessment for Industrial Equipment Under the EU Cyber Resilience Act (CRA).

Contact Cyberintelsys to discuss OT security testing, ICS/SCADA assessment, industrial equipment security, Vulnerability Assessment, Penetration Testing, and CRA compliance-readiness requirements.