Internet of Things 1 min read

Securing critical infrastructure: OT and IIoT defense under NIS2

How to secure industrial legacy systems and meet NIS2 requirements without disrupting production processes.

Critical infrastructure operators face the urgent challenge of complying with the European NIS2 directive while integrating legacy operational technology (OT) and Industrial IoT devices into modern cloud analytics platforms.

This integration introduces severe operational risks, as applying traditional IT security methods to industrial segments can cause catastrophic process failures. Standard IT practices like active scanning can overload decades-old controllers, leading to emergency shutdowns in vital sectors like energy and water supply.

To address these vulnerabilities, enterprises are implementing specialized frameworks like ISA/IEC 62443 and NIST SP 800-82. These standards protect systems through network segmentation, virtual patching, and the OPC UA protocol, which securely normalizes sensor data. Solutions like UnityBase further enable secure, isolated monitoring.

Optimizing and securing these industrial networks is vital for ecological sustainability. By preventing emergency shutdowns and ensuring reliable data transmission, these technologies reduce energy waste, prevent industrial accidents, and enhance resource efficiency across critical infrastructure.

Sources & materials

C-ECO Consulting practices and materials referenced in this article.

  1. UnityBase — unitybase.info
  2. Розробка ПЗ з використанням ШІ та AI-консалтинг — softengi.com
  3. Megapolis.DocNet — inbase.com.ua
  4. А5 Персонал — inbase.com.ua