If you manage cybersecurity for a power utility, an oil & gas refinery, a water treatment plant, or any other critical infrastructure operator, you already know the problem: you have thousands of devices across your OT environment, like PLCs, RTUs, HMIs, switches, firewalls, historians
At any given moment, you suffer from incomplete visibility into which devices are running software or firmware with known vulnerabilities.
The standard IT security answer is to scan. Send a probe, knock on every port, discover what's running, and correlate against CVE databases. It works well in enterprise environments.
In OT environments, it can take down a turbine or stop a factory floor.
At the Industrial Defender, we take a fundamentally different approach to vulnerability identification and mitigation.
Our approach is:
Here's exactly how it works.
The key advantage of Industrial Defender's vulnerability management approach is that it provides an accurate view of your vulnerability posture without scanning your network.
We already have the data.
Every single day, automatically, Industrial Defender collects full configuration data from every onboarded device in your environment, whether that's a Siemens PLC at Purdue Level 1, a managed switch in your control network, a Windows-based engineering workstation, or a next-generation firewall at the IT/OT boundary.
That configuration data includes everything:
This collection runs automatically in the middle of the night. Your operations team doesn't lift a finger.
This is the foundation. And it turns out to be exactly the foundation you need for accurate, non-disruptive vulnerability identification.
"We're not scanning the network; we're not knocking on ports. We basically already have collected all of the data that we need to give you an accurate picture of your vulnerability posture. — Greg Valentine, SVP of Solution Engineering, Industrial Defender
Once that configuration data is in hand, the vulnerability identification process follows a clear, repeatable workflow:
The operator initiates the process with a single button click in the Industrial Defender Central Manager (IDCM). This action triggers a collection sweep that pulls all software application names, application versions, firmware names, and firmware versions from every onboarded device.
The result is compiled into a compressed JSON file, creating a complete software inventory for the entire environment.
Here is an important security detail: that file contains no device identifiers.
It is a purely static list of software-version pairs.
This matters for customers with strict data handling requirements and air-gapped or classified environments.
The compressed file is submitted to the Industrial Defender's support portal, where an automated process takes over. The system maps every software-version entry and every firmware-version entry against multiple authoritative vulnerability sources:
This is where Industrial Defender's approach diverges most sharply from generic vulnerability scanners, and it is the step that makes the output useful in an OT context.
For every identified vulnerability, the system evaluates a set of additional contextual parameters that determine real-world exploitability and urgency:
These parameters produce a multi-tier critical rating.
Industrial Defender uses urgency classifications, including Act Now (actively exploited, easily scriptable, network-accessible) and Act Protect (serious but with mitigating factors), to help operators sequence their response.
The goal is not to hand you 10,000 vulnerabilities. The goal is to hand you a list of 50 vulnerabilities you should address this week, ranked by the actual risk they represent to your specific environment and tell you how to get started.
In OT vulnerability management, the problem is almost never a lack of data. It is a lack of prioritized, contextualized signal that operations teams can act on without shutting down the plant to do it.
Once the vulnerability mapping and prioritization are complete, Industrial Defender returns a response file, called the answer file, to the operator.
This file contains the complete mapping of software and firmware versions to their associated CVEs, contextual risk scores, available patches, and mitigation documentation.
The operator imports the answer file into their IDCM instance. This is where the platform's architecture pays off: because the IDCM already knows exactly which devices are running which software and firmware versions, the import process instantly links every vulnerability to the specific devices in the environment that carry it.
You immediately have a device-level vulnerability dashboard, not a theoretical inventory, but a live, asset-specific risk picture.
Industrial Defender supports multiple data collection methods, and it is worth being precise about how each one affects vulnerability identification coverage.
Agent-based and agentless active collection (via SSH, SNMP, Telnet, WinRM, DNP3, Modbus, S7, EtherNet/IP, and other OT protocols) produces functionally equivalent results for vulnerability management purposes.
Both methods access the device directly, retrieve the full software and firmware inventory, and provide the complete data set needed for accurate CVE mapping. The choice between agent and agentless is largely determined by device type, vendor support, and customer preference, not by data quality.
Passive monitoring observes traffic as it flows through the network without any device communication. It is excellent for device discovery, for capturing firmware version information that appears in protocol handshakes and banner exchanges, and for detecting anomalous communication patterns.
However, applications are running on a Windows engineering workstation. For example, a legacy version of a SCADA historian client may never generate traffic that reveals its presence or version to a passive observer.
If it doesn't traverse the network, passive monitoring will not see it.
The practical implication: for the most complete vulnerability inventory, active collection (agent or agentless) is the preferred method for assets that support it. Passive NTA serves as a complement, providing coverage for devices that cannot tolerate any active communication, and as a continuous behavioral monitoring layer that active collection alone cannot provide.
Critically, customers choose their collection method per device and can mix all three approaches across the same environment.
Industrial Defender provides guidance on the appropriate method for each device type, but the decision belongs to the operator.
Identifying vulnerabilities is only half the problem. Tracking remediation and being able to demonstrate to an auditor that vulnerabilities have been addressed is the other half.
This is where Industrial Defender's continuous collection architecture creates a significant operational advantage.
When an operator deploys a patch to address one or more vulnerabilities, Industrial Defender's next automatic nightly collection sweep detects that the patch has been applied.
Because the system already knows which vulnerabilities the patch addresses, it automatically removes those CVEs from the vulnerability count for the patched devices.
No manual reconciliation is required. The vulnerability dashboard updates itself.
Some vulnerabilities cannot be patched, which is a common reality in OT environments. In some cases, vendors have not released a patch. In others, deploying a patch requires an extended maintenance window. An OEM may also determine that a vulnerability is not exploitable in a specific deployment context. For these situations, Industrial Defender supports manual mitigation documentation.
An operator can record precisely why a given vulnerability has been accepted or compensated for: the OEM's advisory language, the network segmentation controls in place, and the compensating technical measures applied. This documentation is stored in the IDCM and is available for audit purposes, supporting NERC CIP compliance evidence packages, NIS2 technical measure documentation, and similar regulatory requirements.
The audit trail is built into the workflow, not bolted on afterward. When NERC CIP auditors ask for evidence of your vulnerability management program, the documentation exists in the system, not in a spreadsheet maintained by one engineer.
For electric utilities operating under NERC CIP, Industrial Defender's vulnerability management approach directly addresses several of the most labor-intensive compliance requirements.
CIP-007-6 (Systems Security Management) requires utilities to implement a security patch management program, track patches for applicable cyber assets, and document the applicability of security patches for each asset. The automatic patch detection and CVE reconciliation built into Industrial Defender's workflow eliminates the manual spreadsheet-based tracking that most utilities currently rely on.
CIP-010-4 (Configuration Change Management and Vulnerability Assessments) requires utilities to conduct vulnerability assessments at defined intervals and document the results. Industrial Defender's on-demand vulnerability assessment capability, triggered by a single button click, completed without network scanning, and producing a device-level evidence package, is purpose-built for this requirement.
Utilities using Industrial Defender have reported reductions of 80 to 85 percent in the time required to prepare compliance documentation and audit packages.
For organizations managing hundreds or thousands of BES Cyber Assets, that reduction translates directly to labor cost savings and reduces audit risk.
It's worth briefly explaining why Industrial Defender can deliver this capability without network scanning. The answer is the platform's core architecture.
Industrial Defender Collectors (IDCs) sit within OT network zones and maintain continuous communication with the devices they monitor using the device's native protocols where possible, and using standard IT protocols (SSH, SNMP, HTTPS, WinRM) for IT-adjacent assets. This is not passive observation; it is controlled, authenticated, scheduled communication that is operationally safe because it uses the same protocols the devices were designed to respond to, at intervals that do not create network load issues.
Industrial Defender has been conducting active OT device collection using this approach since 2006.
The operational safety record of this methodology is one of the most frequently cited factors when customers explain why they trust the platform in environments where the margin for error is measured in megawatts and pipeline pressure, not server uptime.
The data collected by IDCs flows to the Industrial Defender Central Manager (IDCM), the on-premises platform where all vulnerability management, configuration change management, asset inventory, and compliance documentation functions are centralized.
The IDCM is the system of record. Everything described in this article, the vulnerability dashboard, the answer file import, the automatic patch reconciliation, and the manual mitigation documentation lives there.
Vulnerability management in OT environments has historically been treated as a periodic exercise, a point-in-time assessment conducted once or twice a year, producing a report that was outdated before it was finished.
The operational constraints of OT environments made continuous vulnerability management feel impossible.
Industrial Defender's approach demonstrates that this is a false constraint. By building vulnerability identification on top of the continuous configuration data collection that the platform already performs for asset management and compliance purposes, it becomes possible to maintain a current, device-level vulnerability picture without any incremental operational risk.
The workflow is built for the realities of OT operations: no network scanning, no new firewall rules, no maintenance window required for assessment, and a prioritized output that tells operators where to start rather than overwhelming them with undifferentiated lists of CVEs.
For organizations operating under NERC CIP, NIS2, the OTCC regulatory framework in Saudi Arabia, or any other compliance regime that requires documented vulnerability management, the audit trail is a natural byproduct of normal system operation, not a separate documentation effort layered on top of it.
That is what good OT security infrastructure looks like: not a tool that creates an additional operational burden, but one that makes the work that operators are already doing more visible, more defensible, and more effective.
