OT systems: from vulnerability to resilience

Dominik Birgelen at oneclick Group AG describes how the manufacturing industry can improve OT security

 

The manufacturing industry is a cornerstone of the global economy, but it faces significant challenges in maintaining operational security. Rapid digital transformation has revolutionised manufacturing operations, seamlessly connecting IT and OT systems, leading to significant improvements in productivity and performance. However, it has also introduced new vulnerabilities, exposing businesses to emerging cyber-threats.

 

According to Statista, the manufacturing sector saw the highest share of cyber-attacks among the leading industries worldwide in 2023, with about a quarter of all cyber-attacks aimed at manufacturing companies. When considering the overlap between manufacturing companies and businesses operating in other sectors, it is evident why manufacturing OT systems present a lucrative target for cyber-attackers and malicious threat actors. As manufacturing companies grow increasingly digitised and interconnected, they become more vulnerable to cyber-threats.

 

The impact of a cyber-breach on a manufacturing company’s OT systems can be catastrophic, resulting in disrupted processes, compromised safety, and substantial financial losses. With manufacturing companies susceptible to severe consequences, industry leaders must secure their OT environments and ensure cyber-resilience.

 

OT vulnerabilities in the manufacturing sector

Historically, IT and OT systems were separate, making insider threats, human error or malware infiltration through physical devices the primary concern. The nature of these threats meant that breaches were often limited in scope, focusing on isolated systems or causing temporary disruptions.

 

However, the advent of digital transformation has changed the cyber-security landscape, giving rise to advanced and complex attack vectors. The growing interconnection between OT and IT systems has also created a broader attack surface for cyber-criminals to exploit, resulting in increased exposure to cyber-breaches, specialised malware, and ransomware attacks.

 

As manufacturing systems become more complex, they also become more vulnerable to threats. A sophisticated cyber-security attack today can have devastating impacts on manufacturing organisations, impacting production lines and resulting in significant downtime and financial loss. The consequences of such breaches extend beyond immediate financial impact; they can also damage a company’s reputation, erode customer trust, and lead to regulatory penalties.

 

Manufacturing companies can also face issues with their threat readiness and response capabilities as a result of targeted cyber-breaches. With increasing risks faced by manufacturing companies, the need for robust OT security measures has never been more critical.

 

Enhancing OT security posture

Building resilience in OT security requires a multi-faceted approach. Conducting thorough risk assessments to identify potential threats is a fundamental step for manufacturing organisations to protect their critical assets. Utilising risk assessments can help companies understand vulnerabilities and develop targeted strategies to mitigate cyber-risks. By mapping out potential threat vectors and understanding how different parts of the OT system interact with IT systems, businesses can prioritise their security efforts more effectively and improve their cyber-security posture.

 

Organisations in the manufacturing sector can also benefit from regular audits, enabling them to remain compliant with industry standards and regulatory requirements, which is essential for avoiding legal penalties and maintaining customer trust.

 

Updating and patching OT systems frequently is also vital to safeguard digital environments. Many businesses in the manufacturing sector still operate using legacy systems, which creates a potential opportunity for cyber-criminals and threat actors to exploit. Regular updates and patching can help address this, closing potential entry points for attackers. By maintaining a proactive approach to OT security, manufacturing businesses can foster a culture of vigilance and continuous improvement, which is essential for maintaining long-term resilience. 

 

Advanced technologies to secure the digital environment

Manufacturing businesses can support their digital assets and infrastructure in the long run by utilising advanced solutions based on zero trust architecture (ZTA). ZTA operates on the principle that no entity, whether inside or outside the network, should be trusted by default. Instead, every request is verified before granting entry. By leveraging ZTA, manufacturing organisations can minimise the risk of unauthorised access and contain the impact of breaches should they occur.

 

In addition to this, manufacturing companies should also adopt comprehensive security frameworks that integrate emerging technologies such as artificial intelligence (AI) and machine learning (ML). Harnessing ZTA, AI, and ML in tandem as part of a multi-layered cyber-defence strategy can significantly enhance threat detection and response capabilities, identifying anomalies and potential threats in real time. AI and ML can also automate routine security tasks, minimising human error and freeing up IT staff to focus on more strategic initiatives.

 

With IT and OT systems now more interconnected than ever, the risk of incurring a cyber-security breach and its impact on manufacturing operations is at its highest. However, by proactively monitoring, assessing, and updating cyber-security defences, as well as embracing advanced technologies, manufacturing companies can effectively safeguard their OT and IT systems and ensure long-term success and stability in the digital age.

 

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Dominik Birgelen is CEO of oneclick Group AG

 

Main image courtesy of iStockPhoto.com and Morsa Images