Bridging the Gap Between Operational and Information Technology
Industrial environments have always operated under a fundamental tension: OT systems prioritize availability and physical safety above all else, while IT security frameworks prioritize confidentiality and integrity. PurdueGuard was founded to resolve that tension — not by forcing one discipline to adopt the other's tooling, but by building a neutral federation layer that speaks fluently to both worlds.
We believe that unified device visibility is the prerequisite for every OT security initiative that follows. You cannot segment what you cannot see. You cannot protect assets you have not classified. PurdueGuard makes that foundation concrete, automated, and continuously current.
A Platform Designed for Critical Infrastructure
PurdueGuard federates device inventory from heterogeneous OT scanning tools and IT discovery agents into a single normalized asset register. Our AI classification engine assigns every device to its correct Purdue Reference Model zone — from Level 0 field instruments to Level 4 enterprise systems — with confidence scoring that improves continuously as operators validate and correct classifications.
Zone policy enforcement, cross-boundary anomaly detection, and one-click compliance reporting against IEC 62443, NIST CSF 2.0, NERC CIP, and NIS2 are all built on top of that federated foundation. Every component is designed to operate passively where needed, air-gapped when required, and at the scale of the largest industrial operators in the world.
Principles That Guide Every Engineering Decision
We hold three commitments as non-negotiable. First, safety: PurdueGuard will never introduce risk to operational processes. Passive-first scanning and protocol-aware probing limits exist precisely because a misconfigured security tool should never trip a circuit breaker or stall a production line. Second, transparency: every classification, every anomaly score, and every compliance finding is fully explainable and auditable — no black boxes in safety-critical environments. Third, neutrality: we do not compete with the OT or IT tools our customers have already invested in. We federate them.
A Team of OT and IT Veterans
PurdueGuard was founded by security researchers and industrial systems engineers who collectively bring over 80 years of experience in critical infrastructure cybersecurity. Our team includes former CISA advisors, ICS-CERT analysts, and engineers who have managed security programs at Fortune 500 utilities and manufacturers. We operate under an open-development model: every security decision, every API change, and every compliance assertion goes through peer review before it reaches production.
Our customers are large industrial operators, energy companies, water authorities, and manufacturers. They depend on PurdueGuard not only to protect their networks but to prove compliance to regulators who inspect their control systems. That responsibility shapes every line of code we write.
How We Built Trust with Critical Infrastructure Operators
2022: Founded with a focus on passive OT device discovery, completing pilot integrations with five energy utilities and one major water authority. 2023: Launched Purdue model zone classification with AI confidence scoring. Achieved SOC 2 Type II certification. Deployed at 12 operational sites across North America. 2024: Released federated inventory API, enabling customers to export normalized device data to any SIEM or asset-management platform. Added support for IEC 62443 compliance profiles. 2025: Exceeded 50 deployments. Launched anomaly detection engine and NIS2 compliance module. Announced partnership integrations with leading OT scanning vendors.
A Trust-First Approach to OT-IT Convergence
OT and IT have been converging for two decades, but the security models have not kept pace. Most tools treat them as one uniform network — a dangerous assumption when a misconfiguration in the IT network could stall a manufacturing line or reduce power supply to a hospital. PurdueGuard was built to honor that difference: we understand that OT has different risk tolerances, different compliance obligations, and different operational constraints. We federate all the data each side needs to see, then let each side enforce its own policies. No compromises. No shortcuts. Just alignment.