Operational technology

Securing operational technology (OT) requires unique solutions and the knowledge of specialist technicians. The OT environment is sensitive to disruption and often incompatible with standard penetration testing activities. Security must be approached with the expectation that bespoke testing techniques and approaches, specific to your risk appetite, will be required as standard.

Converge operational technology and security to protect your critical operations from widespread disruption and assure human and process safety.

  • Understand your attack surface Uncover actionable information to remediate vulnerabilities in your OT environment.
  • Contextualize your security Build defenses against the tactics, techniques, and procedures (TTPS) used by attackers against OT.
  • Build resilience Strengthen your operational technology architecture through defense-in-depth strategies.
  • Manage and reduce risk Align OT-specific security risks with broader security management practices and IT implementation.

Our approach


Digital transformation, Industrial Internet of Things (IIot) adoption, and increasing global interconnectivity are providing new ways for attackers to target organizations via their operational technology. In response, our OT security team comes with fresh solutions influenced by its direct experience of building, developing, and commissioning operation technology systems.

We’ve worked across regulated and non-regulated industries in the private sector, as well as with public institutions, applying our individual skill sets to help clients achieve their specific desired outcomes. This broad exposure helps us efficiently identify the main areas and systems of focus during assessment and deliver work that adheres to strict safety standards.

OT environments are made up of highly-sensitive systems, often blending modern connected technology with legacy technologies that were not built for today’s level of connectivity. Our consultants ensure that environments are tested and secured to the highest standard without causing operational disruption. Projects are scoped in a bespoke way around the facility or risk area of interest and according to your risk appetite.

Services & solutions
  • Threat risk assessment 
  • Operational Technology systems criticality mapping
  • Operational Technology cyber security assessment
  • Operational Technology standards compliance and implementation (e.g., ISA/IEC62443)
  • Cyber security factory acceptance testing (CFAT)
  • Cyber security site acceptance testing (CSAT)
  • Assistance in systems build and architecture design
  • Systems configuration review 
  • Hardware security assessment

Speak to the team

Looking for the specialist knowledge needed to help secure your OT? We can help.

Related resources

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To prepare for advanced cyber attacks and build lasting resilience against them, organizations must utilize a range of consultancy services that span predict, prevent, detect, and respond. 

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ICS security evolves as network perimeter dissolves

With the network perimeter now in flux, ICS security can benefit from Zero Trust architecture and micro-segmentation. This article from our OT lead, Janne Taponen, explains how.

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How we can help

Work with consultants who cut their teeth as engineers, designing, building, and maintaining operational technology, to achieve the outcomes your business needs.

  • Experience Proficiency to deliver targeted assessments that align with specific cyber security and safety standards.
  • Safety Assurance that the assessment of sensitive systems will not expose the business to operational risk.
  • Pragmatism A jargon-free approach and recommendations designed to tangibly uplift your security posture.
  • Context An attacker mindset that keeps the security of your operational technology ahead of modern threats.

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Accreditations & Certificates

F-Secure Consulting (F-Secure Cyber Security (Pty) Ltd) is a level 4 contributor to B-BBEE with a procurement recognition level of 100%. Learn more and download our B-BBEE certificate. Click here to read the press release.

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