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NIS2 – EU Network & Information Security Directive Explained

An overview of NIS2, who it applies to, and how strengthening cybersecurity governance, risk management and incident response supports EU regulatory compliance.

What is NIS2?

The Network and Information Security Directive 2 (NIS2) is an EU-wide cybersecurity regulation designed to strengthen the resilience of essential and important entities across Member States.

NIS2 builds on the original NIS Directive and introduces stricter cybersecurity risk management, incident reporting, governance accountability and supply chain security requirements.

Unlike voluntary standards such as ISO 27001, NIS2 is a legal obligation. EU Member States transpose the directive into national law, and regulators have enforcement powers, including significant administrative fines for non-compliance.

Who does NIS2 apply to?

NIS2 applies to organisations classified as:

  • Essential entities (e.g. energy, transport, banking, health, digital infrastructure, public administration)

  • Important entities (including certain digital providers, managed service providers, and technology suppliers)

It significantly expands the scope compared to the original directive and now includes:

  • Cloud computing service providers

  • Data centre providers

  • Managed service providers (MSPs)

  • Managed security service providers (MSSPs)

  • Online marketplaces and digital platforms

If your organisation operates within the EU or provides services to EU-based essential sectors, NIS2 may apply directly or indirectly through contractual requirements.

Why is NIS2 important?

1. Legal Compliance Requirement

NIS2 introduces enforceable cybersecurity obligations across the EU, with harmonised expectations for governance and oversight.

2. Senior Management Accountability

The directive places responsibility on management bodies to oversee cybersecurity risk management measures.

3. Strengthened Risk Management

Organisations must implement appropriate technical and organisational measures to manage cybersecurity risks.

4. Mandatory Incident Reporting

NIS2 establishes strict timelines for reporting significant incidents to national authorities.

5. Supply Chain Security Focus

Organisations must assess and manage cybersecurity risks within their supply chains and third-party relationships.

What does compliance involve?

NIS2 requires organisations to implement proportionate measures covering areas such as:

  • Risk analysis and information system security policies

  • Incident handling and response procedures

  • Business continuity and crisis management

  • Supply chain security

  • Security in network and information systems acquisition and maintenance

  • Vulnerability handling and disclosure

  • Use of cryptography and access controls

  • Cybersecurity training and awareness

Organisations must also ensure board-level oversight and maintain evidence of compliance.

Is certification required?

NIS2 is not a certification scheme. It is a regulatory compliance obligation enforced by national competent authorities.

Organisations must demonstrate that appropriate measures are in place and may be subject to supervisory audits and enforcement action.

How Adoptech Can Help

Understanding whether NIS2 applies to your organisation — and how to implement proportionate controls — can be complex, particularly for technology suppliers serving regulated sectors.

Adoptech supports organisations by:

  • Mapping NIS2 requirements to structured governance controls

  • Aligning NIS2 with ISO 27001, DORA and other security frameworks

  • Structuring incident response and supply chain risk processes

  • Supporting evidence management and regulatory readiness

If you would like to understand whether NIS2 applies to your organisation, or how to achieve and maintain compliance efficiently, please contact a member of the Adoptech team for further guidance.