Boards of directors play a crucial role in addressing the strategic risks inherent in various industries, especially those with high-risk operational technology (OT) environments such as energy, transportation, manufacturing, and production. These sectors heavily rely on OT, which encompasses the hardware and software controlling physical processes and devices, to ensure smooth and secure operations, making them prime targets for cyberattacks. Nevertheless, comprehending and mitigating cyber threats in OT systems can pose challenges for boards, mainly due to the intricate cyber-physical nature of OT and its integration with information technology (IT).
One significant hurdle that boards encounter is the substantial gap between OT experts and board members. Individuals with in-depth knowledge of OT are often positioned too low in the organizational hierarchy to influence top-level decisions made by the board. This disconnect can result in a lack of risk awareness and comprehension at the highest echelons of the organization. Additionally, the chief information security officer (CISO), responsible for overall enterprise cybersecurity, may lack the specialized training and expertise needed to handle cyber risks in OT environments. Unlike traditional IT systems, OT systems have distinct security vulnerabilities, leading to a potential misunderstanding of OT cybersecurity, understaffing, and underfunding, despite the severe repercussions of an OT cyber incident.
In order to gain a comprehensive understanding of OT risks, boards can consider appointing a dedicated OT cybersecurity leader to collaborate closely with the CISO. This role typically entails executive-level visibility, authority, and resources to effectively assess and manage OT security risks. Just as companies have specific leaders for managing environmental health and safety risks or financial risks, having specialized leaders for OT security is paramount. Many organizations are acknowledging this necessity and are creating dedicated roles for OT cybersecurity leaders, indicating a positive shift towards prioritizing OT security.
Effective decision-making in OT environments starts with recognizing the distinctive consequences of an OT security breach compared to an IT breach. While an IT breach may compromise data and financial assets, an OT breach can lead to physical equipment damage, disruption of critical processes, and even pose risks to health, safety, and the environment. To tackle these challenges, organizations should consider adopting a risk-based approach to OT cybersecurity, adhering to industry standards like ISA/IEC 62443-3-2. This framework provides guidance on segmenting OT systems into security zones and crafting plausible risk scenarios.
By developing and assessing risk scenarios, organizations can pinpoint and prioritize the most severe threats to their OT environments. These scenarios can be ranked based on their likelihood and potential impact, aligning with the company’s existing risk-ranking scale to ensure consistency and facilitate the board’s comprehension of varying risks in a broader organizational context.
Boards that acknowledge the need for distinct yet cohesive IT and OT cybersecurity programs, each steered by domain-specific experts, are better equipped to address the unique characteristics and risks associated with each realm. IT security focuses on safeguarding data confidentiality, integrity, and availability, whereas OT security emphasizes safety, availability, and process integrity. To ensure effective oversight and governance, boards can establish an OT Cybersecurity Governance Committee comprising key executives from various departments, fostering cross-functional collaboration to integrate OT cybersecurity into the organization’s overall risk management framework.
In conclusion, boards of directors and senior management must proactively address the escalating cyber risks in OT environments by appreciating the unique challenges, investing in dedicated expertise, and adopting a strategic and proactive approach. By building internal OT cybersecurity capabilities, augmenting them with external specialized providers, and implementing a comprehensive OT cybersecurity program encompassing risk assessments, incident response planning, and continuous monitoring, organizations can enhance their resilience against cyber threats and preserve the security of their critical OT assets. Through strategic partnerships with specialized firms, organizations can navigate the complexities of OT cybersecurity, align their security measures with business objectives, and achieve desired security outcomes, safeguarding their critical operations from the growing menace of cyberattacks.