“What should we be looking out for?” It’s the question I hear most often when discussing the changing OT threat landscape. Whil
e I can’t offer a crystal ball and we all know that our ‘adversaries’ are typically much better funded than we are…, the good news is that critical infrastructure can be
protected, no, it doesn’t have to cost a fortune, and yes, there is a lot of help out there available to Asset Owners.
In 2026, the organizations that thrive will be those that focus on the fundamentals, including knowing their assets, locking down third-party access, and bridging the gap between their IT and OT teams. The following are the eight trends I believe will help owners to protect their critical infrastructure.
1. State-Sponsored Actors Intensify Focus on OT
Nation-state adversaries are no longer just probing — they’re pre-positioning and preparing for operational use of OT access in crises or geopolitical conflict. We are witnessing this right now! Long-term strategic campaigns emphasize reconnaissance, credential harvesting, and stealthy footholds across critical infrastructure sectors.
Why this matters: In 2026, access previously established may transition into active disruption or sabotage — especially in energy, utilities, and transport systems where OT controls physical processes.
2. Ransomware Evolves to Target OT Directly
Now, as we know, the vast majority of compromises in the OT environment gain access via the IT domain, but we see evidence all the time of adversaries being “OT aware’. Ransomware that once encrypted IT data is now learning industrial process behaviours and targeting OT environments with process-impacting tactics, not just data encryption. In addition:
- Attackers are adapting to OT protocols and moving beyond simply locking the data to building malware intelligent enough to understand industrial processes, pushing for production shutdowns, supply chain coercion, and operational extortion.
- Expect process-aware malware that can directly disrupt controllers, HMIs, or safety systems rather than merely locking data.
3. AI Accelerates Attack Sophistication
Artificial intelligence is reshaping how attacks are crafted and scaled:
- AI-assisted reconnaissance can map OT network paths rapidly.
- AI-generated phishing and deception outpace human detection.
- Offensive AI tools reduce the time required to identify and exploit complex industrial exposures.
This drives an AI arms race; defenders must adopt intelligent analytics and anomaly detection to level the playing field.
4. Internet-Exposed OT Remains a Low-Hanging Target
A surprising percentage of industrial assets are still directly accessible from the internet, often with known critical vulnerabilities and weak remote access configurations.
Attackers continue exploiting:
- Exposed VPNs, firewalls, and remote engineering interfaces.
- Default credentials and misconfigurations.
This exposure keeps legacy hardware and remote vendor access pathways as consistent attacker entry points.
The solution is to focus on the rigorous asset inventory and basic cyber hygiene to remove those configurations immediately.
5. IT/OT Convergence Is a Double-Edged Sword
As digital transformation unites IT systems with OT control environments:
- Lateral movement opportunities increase.
- Weak IT compromises now often lead directly into OT operations.
Threat actors increasingly exploit softer IT entry points, e.g., vendor VPN accounts or stolen credentials, then pivot to OT.
6. Supply Chain & Third-Party Risks Cascade
OT security is only as strong as the ecosystem feeding into it. Nearly half of OT breaches in recent years stemmed from uncontrolled third-party access and vendor compromise.
Supply chain risk amplifies when:
- Vendors lack baseline hardening.
- Geopolitical tensions drive outsourcing to insecure regions.
These vectors present indirect but powerful paths into OT networks.
7. Vulnerability Discovery & Exploitation Surges
ICS vulnerability disclosures have risen sharply over the year (thousands of CVEs across PLCs, HMIs, SCADA protocols), with many having high or critical severity.
Wireless network weaknesses and unprotected management protocols further expand the attack surface.
The volume of unpatched exposures remains a core risk factor for 2026.
8. Cultural & Skills Gaps Still Hurt Defences
Despite increased awareness, many operational teams report:
- Lack of training and Awareness.
- Organizational friction between IT and OT risk owners. (Industry surveys also highlight skill and governance gaps.)
These lead to delays, which slow response and inhibit adoption of secure practices.
These frictions slow everything down, but the good news is that you can bridge the gap by simply initiating a conversation. A regular joint incident response tabletop exercise between IT and OT teams could help build processes needed for a faster response than any new software purchase.
Conclusion
The path to resilience starts with clarity. Having clear visibility of your asset inventory and its known vulnerabilities is critical in order to protect them. And having the right Processes and Procedures in place, and then deploying the technology to support those processes, will help mitigate your risk in 2026 and beyond.
Book a demo of OTNexus and secure your operations against the ransomware ecosystem that’s active in the wild right now.
