Solution Brief · OT Security

Your industrial network is connected.
Is it protected?

Air gaps are gone. IT-OT convergence has created a new attack surface — and adding more firewalls isn't the answer. This brief shows you what Zero Trust looks like inside a real industrial environment.

Solution Brief
Zero Trust for OT Security
9-page brief ~10 min read PDF download
50% of 2025 ransomware attacks targeted critical infrastructure sectors KELA, via Industrial Cyber, 2025
90%+ OT attack surface reduction with Zentera Virtual Chambers Zentera customer outcomes
42 days attackers dwell undetected in OT environments on average Dragos OT/ICS Cybersecurity Report, 2026
What this brief covers
  • 01
    Why IT-OT convergence is a security crisis Real-time analytics, remote vendor access, and cloud integration have erased the air gap — and attackers are exploiting the resulting exposure.
  • 02
    The firewall problem in industrial environments Tens of thousands of rules, no identity context, and lateral traffic that overwhelms perimeter-centric security models.
  • 03
    Zero Trust for OT — without disrupting operations How micro-segmentation, least-privilege access, and continuous validation apply to environments where patching is impossible and uptime is non-negotiable.
  • 04
    The Zero Trust DMZ: a practical deployment model Create identity-driven security perimeters around SCADA systems, PLCs, and brownfield devices — no forklift upgrade, no IP scheme changes.
  • 05
    Implementation roadmap: Deploy → Configure → Secure A phased, NIST SP 800-207 aligned framework built for legacy-rich industrial environments and strict operational uptime requirements.

"Even when the network is compromised, Zero Trust keeps assets and resources cloaked — protecting operations."

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