In 2026, the security of critical infrastructure is no longer an option—it is a legal mandate. With the full implementation of the European Directive, companies operating in the Energy, Water, and Oil & Gas sectors face a complex challenge: OT Cybersecurity NIS2. Protecting physical assets from digital attacks today requires a total paradigm shift.

For many, security is seen as a purely IT issue. But at ST2 Srl, we believe true defense begins long before the firewall: it starts within the electrical panel and the control system architecture, designed according to OT Cybersecurity NIS2 criteria.

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Cybersecurity is Not (Just) Software

The great mistake of the past was treating security as a digital “bandage” to be applied to already constructed plants. 2025 data clearly shows the limits of this approach:

• Security-by-Design reduces security management costs (OpEx) by 30% compared to post-sale retrofitting.
• 60% of OT (Operational Technology) vulnerabilities cannot be resolved through simple software updates, as they reside in obsolete hardware architectures.
• Attacks on industrial control systems have increased by 140% over the last two years, with an average downtime cost exceeding €2 million per incident.

The ST2 Approach to OT Cybersecurity NIS2

At ST2, we integrate security as early as the Basic Engineering phase. We transform design services into concrete defensive barriers:

1. Hardening of Electrical Panels: We design panels that include physical protection devices and hardware segregation, resistant to unauthorized access.
2. PLC/DCS Network Segmentation: We strictly apply the IEC 62443 standard, dividing the process into “Zones” and “Conduits.” This pillar of OT Cybersecurity NIS2 ensures that an attack on a single sensor does not propagate throughout the entire plant.
3. E&I Equipment Selection: We define rigorous purchase specifications: protocol encryption (such as OPC UA) and the deactivation of unnecessary ports and services directly at the controller level.

Value for the Client

Entrusting ST2 with your Control Systems means peace of mind on two fronts:

In an interconnected world, the electrical panel is the last line of defense. The challenge of 2026 is not won with an antivirus, but with intelligent, solid, and forward-looking hardware design, fully aligned with OT Cybersecurity NIS2 requirements.

Is your infrastructure ready for the NIS2 challenge? Contact ST2 Srl for a technical audit of your control systems’ security and for E&I design compliant with the highest international standards.

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