Amid the rapid rise in cyber threats targeting industrial systems and growing regulatory pressure around operational technology (OT) security, TÜV SÜD has introduced a first-of-its-kind OT Risk Assessment-as-a-Service (OT-RaaS). This new subscription-based offering is designed to help organizations proactively identify, assess, and manage cybersecurity risks across complex OT environments. As industries continue to digitize and connect critical infrastructure, the need for continuous and structured risk assessment has become more urgent than ever.

Unlike traditional, one-time assessments, TÜV SÜD’s OT-RaaS delivers continuous and repeatable evaluations tailored for industrial production environments. Specifically, the service examines OT assets and systems that may act as potential entry points for cyberattacks. Moreover, it integrates seamlessly into existing plant maintenance and engineering workflows, ensuring that organizations can strengthen security without disrupting ongoing operations. Consequently, on-site teams gain access to actionable insights and prioritized recommendations delivered by an independent and trusted third party.

“Operational technology security is essential for protecting people, facilities, production, and supply continuity,” said Sivakumar Radhakrishnan, Senior Cybersecurity Expert, TÜV SÜD. “As industrial systems become more connected, the attack surface for OT environments continues to grow, while geopolitical risks and cybersecurity mandates are accelerating. OT-RaaS reflects the shift toward continuous OT security, enabling organizations to identify risks early and strengthen operational resilience. TÜV SÜD believes this ongoing assessment model will become a cornerstone of industrial cybersecurity as global standards and regulatory frameworks mature.”

Traditionally, many organizations have taken a reactive approach to OT security, often conducting assessments only after an incident, audit finding, or operational disruption. However, this approach is no longer sufficient. With cybercriminals increasingly targeting industrial sectors such as manufacturing, energy, and utilities, organizations must adopt proactive strategies. Additionally, the growing connectivity of industrial systems has expanded the attack surface, making them more vulnerable to ransomware and other disruptive threats.

To address these challenges, TÜV SÜD’s OT-RaaS establishes a continuous assessment cadence. This enables organizations to maintain real-time visibility into their evolving risk posture, especially as factors such as vendor access, system connectivity, asset lifecycle, and maintenance practices change over time. Therefore, businesses can move from reactive incident response to proactive risk management.

The service follows a flexible subscription model that includes three engagement tiers high-risk, medium-risk, and low-risk. After an initial baseline assessment, organizations can select a tier based on their operational risk profile and cybersecurity priorities. Furthermore, TÜV SÜD offers optional add-on modules, including compliance mapping against globally recognized standards such as NIST CSF 2.0, IEC 62443, ISO 21434, and TS 50701. This flexibility allows organizations across industries including manufacturing, oil and gas, automotive, utilities, and rail to tailor the service to their specific regulatory and operational needs.

In practical terms, customers receive a prioritized risk register along with a detailed remediation roadmap. This ensures that teams can focus on high-impact vulnerabilities first while tracking improvements over time. Additionally, the OT-RaaS methodology follows a continuous improvement cycle that includes baseline assessment, ongoing monitoring, risk identification, remediation planning, and recurring reviews.

Overall, TÜV SÜD’s OT-RaaS marks a significant shift toward continuous, scalable, and proactive industrial cybersecurity. As regulatory frameworks evolve and cyber threats intensify, services like OT-RaaS are expected to play a critical role in helping organizations maintain resilience, ensure compliance, and protect critical infrastructure in an increasingly connected world.

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