OT Cyber Security Services

Industrial control systems (ICS/SCADA/DCS) form the backbone of critical infrastructure across power generation and distribution, oil and gas, water treatment, transport, manufacturing, mining and defence. As of 2025 cyber attacks targeting OT environments have risen by 140%, with threat groups such as Volt Typhoon, Sandworm and FrostyGoop running sophisticated campaigns against industrial systems. CoreDefence OT Cyber Security Services protect your industrial environments against these evolving threats.

The convergence of IT and OT networks, the Industry 4.0 transformation and the spread of IIoT (Industrial Internet of Things) devices expose industrial systems to threat vectors they have never faced before. In line with your IEC 62443 Security Level (SL) targets and the recommendations of NIST SP 800-82 Rev.3, CoreDefence delivers Purdue/ISA-95 model network segmentation, industrial DMZ design, unidirectional gateway (data diode) configuration and OT-specific industrial firewall deployment.

Our OT asset discovery and inventory service uses industry-leading passive OT monitoring and asset management platforms to passively discover and inventory every OT/ICS/IoT device on your network. Firmware versions, known vulnerabilities (CVE), communication maps and risk scoring give you complete visibility.

Our industrial protocol analysis capability inspects Modbus TCP/RTU, DNP3, OPC UA/DA, EtherNet/IP (CIP), PROFINET, BACnet, IEC 61850 (MMS/GOOSE), IEC 104 and S7comm in depth to detect anomalies. We monitor OT-specific attack vectors such as process value manipulation, command injection, unauthorised configuration changes and rogue engineering workstations. All monitoring is passive (out-of-band); your production processes are never interrupted.

For OT penetration testing we apply non-invasive methodologies appropriate to the sensitivity of an industrial environment. We perform PLC/RTU firmware analysis, HMI vulnerability scanning, engineering workstation security assessment, OT network segmentation validation and physical security testing. All testing conforms to IEC 62443-4-2 and NIST SP 800-82 Rev.3 recommendations.

Through OT-specific incident response plan development, tabletop exercises and live scenario drills we test and strengthen your OT security team's readiness. We also advise on sector compliance requirements such as NERC CIP for energy, AWIA for water and TSA Security Directives for transport.