People Risk in OT Cybersecurity: Beyond Theory to Expert Implementation

In the complicated world of OT cybersecurity, the gap between theory and expert implementation is not just a matter of concern – it’s a critical vulnerability.

Alarmingly, many cybersecurity incidents within OT systems go unreported for various reasons. A significant portion of these incidents can be traced back to the mishandling of OT systems, which includes inadequate assessments, poor implementation of security guidelines and frameworks, and insufficient hardening measures, leading to severe breaches.

?

Nowadays cybersecurity is a frequent topic in conferences, panel discussions, and LinkedIn posts, indicating a high level of awareness in this domain. However, it's crucial to emphasize that not everyone discussing these issues is qualified to address them effectively. As we navigate this evolving landscape, the distinction between knowledge and expertise becomes paramount. It's essential to ensure that the responsibility of protecting our critical infrastructure is in the hands of those who possess not only theoretical knowledge but also the practical experience crucial for robust OT cybersecurity.

?

Many consulting firms, despite their best efforts, conduct superficial OT cybersecurity assessments. This issue often stems from a team's limited exposure to actual systems and an understanding of how control systems work, including the inability to understand control narratives or read the logic. Some of these professionals still don’t know the difference between a PLC and a DCS

?

Effective OT cybersecurity begins with a deep understanding of industrial processes, comprehensive knowledge of specific system control narratives, and exceptional expertise in Levels 0 and 1 of the OT components. Customizing the OT security posture to these foundational elements is critical. Moreover, an effective security posture in OT extends beyond just network segmentation, endpoint security, and firewall rules. It demands fine distinction and experienced approach, one that truly understands the complexities of the OT environment.

?It is imperative to recognize that IT and OT are distinctly different domains. OT cybersecurity is not merely about designing architectures based on models like Purdue or applying standards such as IEC 62443. The crux lies in the implementation of these guidelines and the qualifications and genuine expertise of those who implement them.