The convergence of information technology (IT) and operational technology (OT) is a pronounced trend across various industries. This convergence offers significant benefits in terms of data analysis and improving production efficiency for critical infrastructure and manufacturing companies. However, along with these benefits comes an increased risk of cyber disruptions and complexity in securing OT environments. To address these challenges, organizations must shift towards a holistic approach known as 'cyber-physical security.'
Traditionally, IT and OT security have been viewed as separate entities. However, with the growing trend of threat actors crossing boundaries between IT and OT, organizations need to adopt a more integrated and comprehensive approach. Nation-states have long targeted each other's OT systems, with recent incidents revealing that even non-state threat actors pose a significant risk to OT environments.
Threat actors, often motivated by financial gains rather than geopolitical interests, are more likely to launch attacks such as ransomware. Recent advancements in network and email security have drawn the attention of cybercriminal groups towards softer targets found in OT environments. Unfortunately, the struggle within OT security, caught between legacy systems and expanding IT-OT interconnectivity, leaves vulnerabilities that profit-driven attackers are eager to exploit.
In comparison to IT environments, ransomware attacks in OT environments have much higher stakes. While IT environments may experience disruption and financial loss, attacks on OT systems can lead to physical damage, destruction of equipment, and threats to human safety. This raises concerns about threat actors intentionally targeting OT systems with ransomware attacks. It is only a matter of time before these attacks become more prevalent, as cybercriminals tend to follow trends when there is money to be made.
However, intentional targeting of OT systems may not be necessary to cause disruptions. The Colonial Pipeline incident serves as an example where shutting down the pipeline was deemed necessary to prevent malware from spreading into OT systems. Even if attacks primarily affect IT systems, they can indirectly impact OT systems, creating a need for a holistic approach to cyber-physical security.
Organizations with OT need to bridge the knowledge gap between IT and OT teams. Many IT experts are unfamiliar with OT systems, and vice versa, causing potential blind spots in security. Education initiatives and tools that provide a unified view of IT and OT devices and their interactions can facilitate collaboration and improved visibility.
Maintaining an 'air gap' between IT and OT systems is increasingly challenging due to IT-OT convergence. Organizations may unintentionally leave behind the air gap in pursuit of innovation or have unknown points of IT-OT convergence due to security and compliance breaches. Therefore, segmentation and active visibility of network activity are crucial.
Identifying all points of IT-OT convergence, even those that may go unnoticed, is imperative. Adopting a holistic cyber-physical security approach enables the mapping of all IT and OT devices and their activities within a single user interface, allowing for comprehensive monitoring and threat detection.
Organizations must also embrace machine-driven response mechanisms. Historically, OT environments have been hesitant to adopt automated responses due to concerns about disrupting critical processes. However, artificial intelligence can enable targeted and precise responses, minimizing risks and allowing for faster incident resolution. It is essential to evaluate the unique cyber-physical environment and assess the appropriate integration of machine-driven responses.
The convergence of IT and OT presents opportunities for technological innovation across industries. However, it necessitates a shift in security mindset. Organizations that have already embraced IT-OT convergence are at the forefront of this trend, while others must adopt it to remain competitive in the future. As the risk of cyber threats looms larger, a holistic approach to cyber-physical security becomes crucial for striking the ideal balance between technology innovation and risk mitigation.
While the convergence of IT and OT may seem complex, it is essential to stay informed and adapt security strategies accordingly. At Forbes Technology Council, our community consists of world-class CIOs, CTOs, and technology executives who continuously explore and address emerging technology challenges. Are you qualified to join?
