Top 10 Skills Gaps in OT Cybersecurity Teams (2026 Report)

Operational technology security is no longer a niche discipline tucked away inside a plant or substation. In 2025 and 2026, it sits at the intersection of uptime, safety, regulation, resilience, and board-level risk. SANS’ latest State of ICS/OT Security survey drew on responses from 330 industry professionals and highlighted rising threats, expanding regulatory demands, and a growing need for practical capability in industrial environments. At the same time, Fortinet’s 2025 OT security survey of more than 550 OT professionals found that 46% of organizations had reached Level 4 maturity, while 52% had already placed OT security under the CISO, with 80% planning to follow. 

That progress matters, but it also exposes the real problem: many OT teams are not short on tools alone, they are short on the right mix of industrial, security, and operational skills. ISC2’s 2025 workforce study says organizations increasingly see critical skills as more important than simply adding headcount, while Fortinet’s 2026 global skills-gap report notes that lack of cybersecurity skills remains the leading cause of breaches, alongside lack of awareness and inadequate security products. ENISA also continues to emphasize that the cybersecurity skills gap persists across critical sectors and released specific guidance on roles and skills for NIS2 essential and important entities in 2025. 

For industrial organizations, this creates a very specific challenge. OT cyber teams must defend systems that were not built for today’s threat landscape, often across decades-old equipment, hybrid networks, and fragile operations that cannot tolerate “standard IT” approaches. ISA says industrial control systems were not designed with modern threats in mind and that OT-focused training must be grounded in the full industrial lifecycle, not repurposed from enterprise IT security. 

Why the OT skills gap looks different from the IT skills gap

The OT skills gap is not just about knowing security tools. It is about understanding process behavior, engineering constraints, safety dependencies, vendor ecosystems, remote access paths, and how a seemingly small change can affect physical operations. That is why OT programs mature when security, engineering, operations, and leadership start working from a shared model of risk. Fortinet’s 2025 OT report ties higher maturity to fewer incidents and faster recovery, while SANS’ 2025 survey points to the importance of practical controls and capabilities built for industrial environments. 

The following ten gaps show up again and again in real OT environments. They are the gaps that slow detection, weaken recovery, and make compliance harder to operationalize. They also define where the next generation of OT cybersecurity training, hiring, and leadership investment needs to go. 

1) OT asset visibility and accurate inventory skills

Most OT teams still struggle with one of the simplest questions in cybersecurity: what exactly is connected to the environment right now? In industrial networks, the answer is rarely straightforward. Legacy PLCs, engineering workstations, remote access tools, unmanaged switches, vendor laptops, and temporary connections can all blend into a living environment that changes faster than spreadsheets do. SANS’ 2025 survey and its related resources point to asset-aware monitoring and asset inventory as a major focus area, showing how central visibility has become to OT defense. 

The skill gap here is not merely “counting assets.” It is knowing how to build and maintain an inventory using passive discovery, engineering context, and process-aware classification. OT analysts must be able to distinguish a critical controller from a routine endpoint and understand which assets are safe to query actively and which are not. Without that skill, teams cannot prioritize risk, detect drift, or support segmentation and response. ISA’s lifecycle-based training approach reflects exactly this need for real-world, industrial-specific competence. 

2) Incident response skills that respect process safety

In enterprise security, incident response can focus on containment, eradication, and restoration. In OT, those steps must be balanced against safety, availability, and production continuity. A “good” response in IT can be a dangerous response in a refinery, water plant, or power environment. That is why OT teams need responders who understand process interlocks, operator procedures, maintenance windows, and the real consequences of taking a controller offline. Fortinet’s OT report shows that organizations with higher maturity recover faster, which is a strong signal that practiced response matters. 

This gap often appears when a team can identify suspicious traffic but cannot decide whether to isolate a device, whether to switch to manual operation, or how to validate that a response action will not disrupt the physical process. The best OT responders know how to work with operations staff, engineering leads, and safety teams under pressure. That is a specialized skill, not an extension of traditional SOC work. SANS’ 2025 survey framing around capability gaps reinforces that point. 

3) OT network architecture and segmentation skills

Segmentation is one of the most repeated recommendations in OT security, but the hard part is not the slogan. The hard part is designing segmentation that reflects real process dependencies and legacy constraints while still shrinking attack paths. Fortinet’s 2025 OT report links maturity improvements with practices such as segmentation and threat intelligence, while OT training programs from SANS and ISA emphasize industrial architecture and lifecycle-based design. 

Many OT teams know they need zones and conduits, but they lack the experience to implement them safely. That includes mapping dependencies, deciding where historians and jump servers belong, handling remote vendor access, and avoiding flat networks hidden behind “temporary” exceptions. In practice, segmentation is an engineering skill as much as it is a security skill. The teams that get it right can reduce lateral movement without breaking operations. 

4) Secure remote access design and governance

Remote access remains one of the most persistent OT risk drivers because it connects trusted external users directly to critical environments. SANS highlights secured remote access as a critical control in its 2026 OT white-paper resources, underscoring how central this topic remains to modern OT risk reduction. 

The skill gap is not just in deploying a VPN or remote support platform. It is in building a full governance model: who can connect, when they can connect, what they can reach, how sessions are monitored, how access is approved, and how credentials are revoked. In industrial environments, remote access must be as much about accountability and traceability as about connectivity. This is a classic place where IT-only thinking fails, because the consequence of a bad access path is not only data exposure but possible process disruption. 

5) Industrial protocol and control-system fluency

OT security people who do not understand PLC logic, SCADA architecture, HMI behavior, historians, or common industrial protocols will always be at a disadvantage. ISA’s certificate program explicitly frames OT security as a lifecycle discipline built around assessment, design, implementation, operations, and maintenance, not generic enterprise controls. 

This gap shows up in day-to-day work. Analysts may see unusual traffic but not know whether it represents a bad command, normal engineering activity, or a maintenance routine. They may hear “Modbus,” “DNP3,” “IEC 61850,” or “OPC UA” and understand the acronym without understanding the operational risk. That limits detection quality, triage speed, and communication with engineers. Industrial fluency turns noisy alerts into meaningful events. 

6) OT threat intelligence interpretation

Threat intelligence in OT is only valuable when it is translated into asset- and process-specific action. Fortinet’s OT report says threat intelligence is one of the practices associated with stronger maturity and better recovery, while the 2026 Dragos OT report says adversaries are moving beyond pre-positioning and are actively mapping control loops and learning how to manipulate physical processes. That is a major signal that generic threat feeds are not enough anymore. 

The skill gap here is interpretive. OT defenders need people who can take an adversary TTP, a vulnerability, or a campaign description and answer the operational question: what does this mean for my facility, my process, and my exposure path? Teams that lack this skill often collect intelligence without converting it into a prioritized defense plan. Dragos’ OT guidance and SANS’ survey findings both point toward the same need: practical, OT-native threat understanding. 

7) Compliance translation skills for NIS2, IEC 62443, and critical infrastructure rules

OT cybersecurity teams increasingly operate in a world of obligations, not just best practices. ENISA notes that the updated NIS2 Directive expands the scope of critical sectors and adds new requirements for entities across energy, transport, drinking water and wastewater, digital infrastructure, manufacturing, and more. ENISA also published guidance in 2025 on cybersecurity roles and skills for NIS2 essential and important entities. 

The skill gap is translation. Many teams can read a control requirement, but they struggle to map it to plant reality, evidence collection, ownership, and measurable implementation. IEC 62443 knowledge is especially valuable here, because it gives OT programs a common language for risk assessment, secure design, and maintenance across the system lifecycle. ISA’s program is built specifically around those needs and validates the ability to apply the standard in real industrial settings. 

8) OT detection engineering and monitoring skills

OT monitoring is not enterprise SIEM work with different labels. It requires analysts who can detect abnormal behavior without overwhelming the operation with false positives. SANS continues to emphasize visibility, detection, and response as core OT security capabilities, and its 2025 survey is positioned around the capability gaps that organizations are trying to close. 

This gap includes protocol-aware detection logic, baseline building, anomaly interpretation, and knowing what “normal” looks like during startup, shutdown, maintenance, or production peaks. The most effective OT defenders do not just review alerts; they understand the operational context behind them. That is where industrial monitoring becomes a craft rather than a checkbox. 

9) AI, automation, and cloud/edge security skills

AI is reshaping cybersecurity work, and OT teams are being pulled into that shift whether they are ready or not. ISC2’s 2025 workforce study says 69% of respondents are already on a path toward regular AI security tool use, and 73% believe AI will create more specialized cybersecurity skills. The study also found that practitioners are actively building AI-related knowledge, including threat detection, threat modeling, governance, and audit skills. 

For OT teams, this means two things. First, AI tools may help with alert triage, network monitoring, and repetitive analysis. Second, teams must understand the security implications of AI systems themselves, especially when they touch operational data, edge deployments, or integrated industrial workflows. The OT workforce of 2026 needs people who can use automation without losing process judgment. 

10) Cross-functional leadership and communication skills

OT security failures are often people failures long before they are technology failures. Teams need professionals who can explain risk to engineers, budget pressure to executives, and safety concerns to security leaders without creating confusion. ISC2’s 2025 workforce study notes that organizations increasingly need broader skill bases, while ENISA emphasizes structured roles and competencies for critical-sector entities. 

This gap matters because OT programs are now moving under CISO or CSO ownership much more often. Fortinet found that 52% of organizations already place OT security under the CISO and 80% plan to follow. That means OT specialists must communicate in board-ready language while still staying credible on the plant floor. The best teams can bridge both worlds. 

What OT leaders should do next

The fastest way to close these gaps is not to buy one more tool and hope the team catches up. It is to build capability around the work that OT security actually requires: inventory, segmentation, monitoring, remote access governance, incident response, and standard-driven design. ENISA’s skills guidance, ISA’s lifecycle-based certification model, and the current SANS and Fortinet findings all point in the same direction: industrial security needs practical competence, not just awareness. 

A strong OT cybersecurity program in 2026 will usually do five things well: it will train engineers and security staff together; it will document and verify asset visibility; it will practice incident response with operations; it will align controls to IEC 62443 and regulatory requirements like NIS2 where relevant; and it will bring AI in carefully, as an accelerator rather than a replacement for industrial judgment. Those are the habits that separate mature OT programs from reactive ones. 

Final thought

The OT cybersecurity skills gap is not a future problem. It is the hidden constraint shaping how fast industrial organizations can mature, how well they can respond, and how confidently they can meet the growing expectations around critical infrastructure resilience. The teams that win in 2026 will not be the ones with the loudest tools. They will be the ones that combine industrial understanding, security discipline, and the ability to turn standards and intelligence into action. 

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