OT Asset Discovery
See every OT, IoT and cyber-physical asset across your sites, without touching the process
Get a complete, continuously updated inventory of the cyber-physical systems that run your operations: PLCs, RTUs, HMIs, SCADA servers, historians, IoT devices, medical devices and building management systems. CyberProof combines passive, non-disruptive sensing from Nozomi Networks and other OT partners with its threat-led managed service to discover every asset, classify it by criticality and security coverage, and connect it to your IT security operations. That lets security and engineering teams close blind spots, surface rogue devices and prioritize the exposures that matter most to safety and uptime.
Three Pillars of OT Asset Discovery
Discover Every Cyber-Physical Asset
Build a complete inventory of OT, IoT, IoMT and building systems using passive monitoring that never disrupts operations.
Classify by Criticality and Coverage
See each asset’s role, Purdue level and vulnerabilities, and whether it is monitored, unmonitored or unknown.
Connect OT to Threat-Led Defense
Feed a trusted OT inventory into exposure management and a unified IT/OT SOC, prioritized by who is targeting your industry.
You Can’t Protect OT Assets You Can’t See
Industrial estates grow faster than anyone documents them
Plants, grids, clinical estates and buildings accumulate connected devices over decades. Vendors connect remotely for maintenance, and business units add IoT and building systems without consulting security. At the same time, IT/OT convergence links these environments to the enterprise network, giving attackers a path from a phishing email to a production line. Most organizations still rely on spreadsheets, engineering drawings and point-in-time audits. The result: no current, trusted view of what is running, and blind spots where the consequences are physical, not just digital.
- Outdated inventories: Spreadsheets and engineering drawings drift out of date as devices are added, replaced or reconfigured.
- IT tools can’t be used: Active scanning and endpoint agents can disrupt fragile controllers, so standard IT discovery methods are off limits.
- Protocols IT tools can’t read: Modbus, DNP3, S7, PROFINET, BACnet and EtherNet/IP carry meaning that generic tools miss.
- Unpatchable by design: Legacy and vendor-frozen assets often can’t be patched, so compensating controls depend on knowing exactly where they are.
- Hidden IT-to-OT pathways: Remote access gateways, jump servers and historians create routes into control networks that no inventory records.
- Siloed ownership: Engineering, facilities, clinical engineering and security each hold only part of the picture.
Know the Security State of Every OT Asset
Monitored, unmonitored or unknown, and why it matters
CyberProof correlates what passive sensors actually see on the network (the primary source) with your existing records, such as CMDBs, engineering inventories and IT security tools (secondary sources), and checks whether each asset is covered by monitoring and detection. Every OT asset gets a clear security state:
- Managed: The asset is known, within sensor coverage, and its activity reaches the SOC with detections mapped to the threats that target it. Monitored assets flow into exposure management for threat-informed prioritization.
- Unmanaged: The asset is known, but it sits outside sensor coverage, its telemetry doesn’t reach the SOC, or no detections apply to it. These are coverage gaps.
- Suspicious: Sensors see the asset communicating, but it isn’t in any inventory. Rogue, contractor and shadow devices, including unmanaged IoT and wireless devices, carry the greatest risk.
The goal: move unmonitored and unknown assets into the monitored category, and track progress against a coverage target agreed with your engineering and operations teams.
How Leading Enterprises Manage Their OT Asset Estate
From point-in-time audits to continuous OT asset management
Leading security and engineering teams treat OT asset management as a continuous cycle, not a periodic audit. This builds the foundation for exposure management, compliance and threat-led defense across IT and OT.
CyberProof OT Asset Discovery
A continuously updated, security-first inventory of your cyber-physical estate
CyberProof OT Asset Discovery, part of Cybersecurity Estate Management, gives security and engineering teams an authoritative view of every cyber-physical asset, plus the context they need to act on it. The service is delivered with Nozomi Networks as CyberProof’s OT sensing partner, and also supports Armis and Claroty for organizations that already run them.
- Discover without disruption: Nozomi Networks sensors discover assets passively through deep packet inspection, with selective active querying only where your engineering teams approve it.
- Understand OT protocols: Read hundreds of OT, IoT and IT protocols, so each asset’s role, behavior and communications are understood, not just its IP address.
- Cover the full cyber-physical estate: Discover OT/ICS, IoT, IoMT and building management systems, from field controllers to the industrial DMZ, across every site.
- Enrich with asset intelligence: Fill gaps in vendor, model, firmware, lifecycle and vulnerability data using intelligence drawn from more than 100 million devices monitored by Nozomi Networks worldwide.
- Classify by criticality and coverage: Map every asset to a Purdue level and criticality tier, and flag monitored, unmonitored and unknown assets.
Work with the tools you have: Bring an existing Armis or Claroty deployment, and reconcile OT inventories with your CMDB and IT asset data for a single source of truth.
How OT Asset Discovery Works
From passive sensing to an actionable OT asset inventory
- Deploy passive sensors: Nozomi Networks sensors connect to network mirror ports at key points, including the industrial DMZ, and start in learning mode. There are no agents on controllers and no changes to operational systems.
- Discover and baseline: Identify every asset, connection and protocol, and build a baseline of normal behavior for each device and process.
- Classify and reconcile: Assign Purdue levels and criticality tiers, reconcile against CMDB and engineering records, and give each asset a security state.
- Map the IT-to-OT attack surface: Identify the IT assets, remote access paths and conduits that lead into control networks.
- Investigate and remediate: CyberProof experts work with your engineering teams to investigate unknown assets and close coverage gaps, recommend compensating controls that respect safety cases and change windows, and route findings into ticketing workflows.
- Feed threat-led defense: Monitored assets flow into CyberProof Continuous Threat Exposure Management (CTEM) for threat-informed prioritization, and OT telemetry joins IT data in a co-managed SOC through CyberProof Agentic MXDR, with Detection Engineering tuned to the threats targeting your industry.
Business Outcomes from OT Asset Discovery
Turn OT visibility into safer, more resilient operations
- Eliminate blind spots: Identify unknown, rogue and shadow devices across every site and bring them under monitoring.
- Protect safety and uptime: Discover and monitor assets without scanning fragile controllers or interrupting production.
- Reduce IT-to-OT risk: Find and close the pathways attackers use to move from the enterprise network into control systems.
- Prioritize by operational consequence: Focus remediation on safety systems and critical production assets first, not on raw vulnerability scores.
- Strengthen compliance readiness: Keep an authoritative inventory that supports IEC 62443, NIS2, NERC CIP and other sector requirements.
- Unify IT and OT security: Work from one estate inventory, one exposure queue and one 24/7 co-managed operation.
Proof points (from existing CyberProof case studies, anonymized, and Nozomi Networks public data):
- Multinational gold mining company: combined 24/7 IT and OT SOC operations with an integrated view, across multiple countries and languages
- International real estate group: a scalable security monitoring center covering IT, OT and IoT systems
- Nozomi Networks: more than 102 million OT, IoT and IT devices monitored across more than 11,000 installations worldwide
Discover What’s Really Connected to Your Operations
Start with an OT Asset Discovery Assessment
Get an evidence-based view of your cyber-physical estate in 30 days. CyberProof uses OT sensors passively, discovers your OT, IoT and building system assets, and maps the pathways from IT into your control networks. See which assets are monitored, unmonitored or unknown, where detection coverage falls short, and which exposures to address first.
