Arjan Aelmans from Fortinet argues that we have managed to achieve a reasonable level of IT security collectively. However, the same cannot be said for OT security. This raises the question: why is that the case? And how can we effectively address this issue? In our conversation, we delve into topics such as ISA/IEC 62443, the Purdue model, Zero Trust, Fortinet’s Security Fabric, and more. Today on Techzine, we will explore these crucial aspects of OT security.
OT security, referring to the protection of operational technology systems, presents unique challenges compared to IT security. While IT security has made significant progress over the years, OT security still lags behind. To understand why this disparity exists, we need to examine the factors that contribute to it.
One key aspect is the difference in focus between IT and OT systems. IT systems primarily deal with information processing and data storage, whereas OT systems are responsible for controlling physical processes and machinery in industries such as manufacturing, energy, and transportation. This fundamental distinction leads to varying security requirements and considerations.
To address OT security effectively, industry standards play a crucial role. One such standard is ISA/IEC 62443, which provides guidelines and best practices specifically tailored for securing industrial automation and control systems (IACS). Compliance with this standard ensures that organizations have a robust framework in place to safeguard their OT environments.
Another essential framework in the realm of OT security is the Purdue model. This model categorizes OT systems into different levels or zones based on their functionality and criticality. By segmenting the network into distinct zones, organizations can implement appropriate security measures and control access between zones to mitigate potential risks.
An emerging approach gaining traction in the field of cybersecurity is the concept of Zero Trust. Unlike traditional security models based on perimeter defense, Zero Trust operates on the principle of “never trust, always verify.” It demands continuous authentication and authorization for every user and device, regardless of their location in the network. By adopting this approach, organizations can enhance the security posture of both their IT and OT environments.
Fortinet’s Security Fabric is a comprehensive security solution that encompasses various products and services to provide end-to-end protection for networks, including both IT and OT systems. The Security Fabric integrates different security technologies into a unified architecture, enabling seamless communication and threat intelligence sharing across the entire network infrastructure.
In conclusion, while IT security has made significant strides, OT security remains an area requiring focused attention. Standards like ISA/IEC 62443, frameworks like the Purdue model, and concepts like Zero Trust offer valuable guidance in building robust OT security strategies. With solutions like Fortinet’s Security Fabric, organizations can achieve comprehensive protection for their IT and OT environments alike. As technology continues to evolve rapidly, it is crucial to prioritize and invest in OT security to safeguard critical infrastructure and ensure the smooth functioning of industrial processes.
