IoT / ICS Security

Operational technology and industrial control systems increasingly connect to corporate networks and the internet, widening the attack surface for environments that were never designed to be exposed. Nexagate helps organisations understand and reduce the risk to their IoT, ICS and SCADA systems while keeping production and safety systems running.

Our approach recognises that OT environments cannot be tested like conventional IT. We begin with passive asset discovery and network mapping to build an accurate inventory of controllers, sensors and connected devices, then assess segmentation against a defence-in-depth model such as the Purdue reference architecture. We review the separation of safety-critical systems, the security of protocols and remote access, and the configuration of connected devices, using techniques chosen to avoid disrupting live operations. Findings are risk-rated with practical, prioritised remediation guidance appropriate to industrial environments.