Purdue Model - defense in depth
Controls mapped to every Purdue level, from enterprise IT down to field devices. IEC 62443 · NIST aligned.
Enterprise IT
Next-Gen Firewall
IT/OT DMZ
Data Diodes
Operations & Site Control
Zones & Conduits
Supervisory Control (SCADA/HMI)
MFA & Secure Remote Access
Basic Control (PLC/RTU)
Passive Monitoring
Field Devices (Sensors/Actuators)
Asset discovery & visibility
Passive, drop-in architecture
Sensors and collectors sit inside the OT network and feed the Inspira SOC over passive SPAN/TAP - non-intrusive, with zero production downtime.
OT Network
OT sensors (physical or virtual) and remote gateways / collectors placed inside the plant network.
Passive SPAN / TAP
Non-intrusive port-mirror or network-tap connectivity across all industrial protocols - nothing inline, nothing to disrupt production.
Inspira SOC (SIEM)
Unified OT and IT telemetry lands in your SIEM and the 24×7 Inspira SOC for detection and response.
A model for every stage of the journey.
Everything the plant floor needs - secured for you.
Frequently asked questions.
How is OT security different from IT security?
OT protects the plant floor - SCADA, PLCs, and industrial controls where safety and uptime come first and agents can't be installed. We deploy passively and non-intrusively, secure across the Purdue model from field level to enterprise IT, and never disrupt operations.
Will your tooling disrupt our production environment?
No. Deployment is passive and drop-in: OT sensors on a SPAN port or network tap, remote gateways for constrained sites, and full industrial-protocol coverage - all with zero production downtime.
What does defense-in-depth look like across the Purdue model?
We layer controls level by level: network segmentation, Zones & Conduits, and data diodes at the field and control levels (0-2); Next-Gen Firewalls, secure remote access, and MFA at the supervisory and IT/OT DMZ boundary; endpoint protection and centralized monitoring at production (Level 3); and vulnerability scanning plus threat intelligence across the IT/OT DMZ (3.5) and enterprise IT (Level 4) - all tied together by a 24×7 OT MSS/MSSP.
Which standards and frameworks do you align to?
IEC 62443 and NIST, with Purdue-model segmentation and risk scoring. Our engagements have delivered EPA/IEC 62443 3-3 compliant OT IDS across dozens of facilities.
Do you provide 24×7 monitoring for OT?
Yes - an OT-specific 24×7 SOC (MSS/MSSP) with incident response, tailored threat intelligence, malware analysis, digital forensics, and monthly reporting, unified with your IT SIEM.
Which sectors do you serve in each region?
As an elite MSSP partner with global reach, we tailor sector expertise by region: Americas - Oil & Gas, Water/Utilities, Healthcare; Europe - Manufacturing, Healthcare, Power; MEA - Manufacturing, Power, Chemicals, Oil & Gas, Hospitals; India - Power, Automobile, Airports, Chemicals, Oil & Gas; APJ - Water/Utilities, Manufacturing.
Can you share proof points from real deployments?
Yes. Manufacturing - 7 chemical plants: a phased assessment across heterogeneous SCADA/PLC fleets with onsite IT/OT SOC monitoring. Power transmission & substations: centralized monitoring of strategic national infrastructure with real-time threat detection. Water/Wastewater - 31 plants: EPA/IEC 62443 3-3 compliant OT IDS across US & ANZ facilities, integrated with SIEM. Airports - critical infrastructure: asset visibility with Armis across baggage-handling (BHS), passenger-handling (PHS), CCTV, fueling, and power systems, 24×7.
Which OEMs and platforms do you work with?
We partner with Nozomi Networks, Armis, Claroty, and Tenable to deliver agentless/passive asset discovery, OT IDS, and vulnerability management.