NIS2 compliance: a practical guide for 2026

NIS2 is the EU's update to its network and information security directive. It broadens scope, raises accountability for management, and shortens incident-reporting deadlines. For many organizations, it is the first time security stops being an IT-only concern.

Who is in scope

NIS2 covers essential and important entities across sectors including energy, transport, health, digital infrastructure, and public administration. The threshold-based definition pulls in many mid-sized businesses that were never regulated before. If in doubt, assume you are in scope and check.

What it requires

The directive demands risk-management measures, supply-chain security, and incident reporting within 24 hours of becoming aware of a significant incident, with a fuller report within 72 hours. Management bears direct responsibility and can be held personally liable for negligence.

• Risk analysis and information-system security policies
• Incident handling and business continuity
• Supply-chain security and vulnerability handling
• Access control and asset management
• Encryption and multi-factor authentication where appropriate

How to prepare

Start with visibility. You cannot demonstrate risk management over assets you cannot enumerate. Map your estate, identify your essential services, and align your controls to a recognized framework such as ISO 27001 or the CIS Controls, which map well to NIS2 expectations.

Then build the reporting muscle. The 24-hour deadline is unforgiving, so your detection and response must produce the information you need to notify within hours, not days.