Use it when
Use this list when one part of your environment needs managed monitoring or response coverage.
Coverage area
OT/ICS Security Monitoring
Providers covering OT/ICS. Confirm whether coverage means monitoring, investigation, or response.
4 providers
Forescout
24/7 threat detection and response across IT, OT, IoT, and unmanaged devices — with agentless visibility into infrastructure that other MDR providers cannot see
Enterprise / Mid-Market · Endpoints
Service MDR
Response Contain threats
Price Per-asset pricing with custom quotes. Premium positioning — mid-market organizations typically pay $15K-$40K/month.
Fortinet FortiGuard MDR
24/7 managed detection and response across endpoints, network, and OT environments — fully integrated with your existing Fortinet infrastructure
Enterprise / Mid-Market · Endpoints
Service MDR
Response Contain threats
Price ~$3-8/endpoint/month
NTT Security
24/7 global security operations from one of the world's largest IT services companies — monitoring, detection, and incident response at massive scale
Enterprise / Government · Endpoints
Service MSSP
Response Contain threats
Price Custom enterprise pricing based on organization size and services. Contact for quote.
Trend Micro MDR
24/7 managed detection and response across endpoint, email, cloud, network, and OT — powered by the broadest native XDR platform and Zero Day Initiative threat intelligence
Enterprise / Mid-Market · Endpoints
Service XDR
Response Contain threats
Price Credit-based licensing via Vision One platform. MDR add-on pricing varies by coverage scope. Mid-market deployments typically run $15K-$40K/month; enterprise ranges from $40K-$150K+.
How to use this list
Do not assume
Coverage does not always mean action. Some providers monitor a source but cannot contain threats there.
Ask before shortlisting
- Confirm which telemetry sources are included by default.
- Ask whether response actions work on this surface or only alerting is included.
- Check whether reporting and detection tuning are part of the managed service.
Category background
These SOC providers monitor operational technology (OT) and industrial control systems (ICS) for cybersecurity threats — including SCADA, PLCs, and industrial network traffic. As IT and OT networks converge, protecting critical infrastructure from cyber threats is an urgent priority for manufacturing, energy, utilities, and government organizations.
Why OT/ICS Monitoring Matters
Industrial control systems were designed for reliability, not security. Many run legacy protocols and operating systems that cannot be easily patched or updated. The convergence of IT and OT networks has exposed these systems to threats they were never designed to withstand — including ransomware, nation-state attacks, and supply chain compromises. High-profile incidents like the Colonial Pipeline attack have demonstrated the real-world consequences of OT security failures.
What to Look For
Evaluate providers on their ability to discover and inventory OT assets, parse industrial protocols, detect anomalies without disrupting operations, and coordinate response actions with plant engineers and operational staff. Specialized OT SOC providers maintain separate monitoring environments for OT networks and employ analysts with industrial security certifications (GICSP, GRID) and experience in ICS-specific threat landscapes.
Questions
What does OT/ICS security monitoring cover?
OT/ICS security monitoring covers supervisory control and data acquisition (SCADA) systems, programmable logic controllers (PLCs), distributed control systems (DCS), human-machine interfaces (HMIs), and the industrial networks connecting them. SOC providers monitor for unauthorized access, protocol anomalies, firmware changes, and lateral movement between IT and OT networks.
Why is OT security different from IT security?
OT environments run specialized industrial protocols (Modbus, DNP3, OPC-UA, BACnet) that traditional IT security tools cannot parse. Equipment often runs legacy operating systems that cannot be patched, availability takes priority over confidentiality, and a misconfigured response action could disrupt physical processes or endanger safety. OT-capable SOC providers understand these constraints and tailor their monitoring and response accordingly.
Can a single SOC provider cover both IT and OT?
Some providers offer converged IT/OT monitoring, which is increasingly valuable as IT-OT network boundaries blur. However, OT monitoring requires specialized protocol analysis, asset discovery capabilities, and response playbooks that respect operational constraints. Look for providers with dedicated OT expertise, not just IT monitoring extended to industrial networks.