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NIS2
Definition
NIS2 is the European directive for network and information security that requires organisations in critical sectors to implement robust cybersecurity measures. Board members are personally liable for non-compliance.
NIS2 (Network and Information Security Directive 2) is the successor to the NIS Directive of 2016 and has been in force in EU member states since October 2024. The directive significantly expands the number of mandatory sectors and imposes stricter requirements on risk management, incident reporting and supply chain security.
Organisations fall under NIS2 if they are active in sectors such as energy, transport, finance, healthcare, digital infrastructure and government services above certain thresholds. Board members are held personally liable for serious violations.
NIS2 compliance requires a gap assessment, implementation of security measures, incident response procedures and annual reporting. DEFION offers a NIS2 Readiness Assessment. An estimated 160,000 organisations across the EU fall under NIS2, many of which are not yet aware of their obligations. The directive introduces peer reviews between member states and enhanced cooperation through EU-CyCLONe for large-scale incident management.
Impact on organisations
The impact on organisations is substantial. Under NIS2, organisations in critical sectors are required to implement appropriate technical and organisational measures. DORA sets comparable requirements for financial institutions. The average cost of a security incident amounts to millions of euros in recovery, legal fees and reputational damage. National cybersecurity centres warn that advanced threat actors increasingly target European organisations.
Protection
Effective protection requires a layered approach combining technical measures with organisational processes and awareness. Regular testing of security measures through pentests and security assessments is essential. An incident response plan with clear roles and communication lines prepares the organisation for worst-case scenarios. Continuous monitoring through an MDR service or internal SOC detects threats before they can cause damage. Security awareness training ensures employees recognise and report suspicious activities.
The threat landscape evolves rapidly. Organisations that operate only reactively face increasing risk. A proactive security strategy combines technical measures with regular security testing, continuous monitoring and a practised incident response team. NIS2 requires organisations in critical sectors to implement demonstrable security measures, including supply chain risk management and regular assessments. The cost of prevention is a fraction of the cost of a security incident: the IBM Cost of Data Breach Report 2024 documents average costs of $4.88 million per incident. Organisations with an MDR service or practised incident response team save an average of $2.66 million per incident compared to organisations without preparation.
How DEFION helps
DEFION offers a comprehensive portfolio of security services that help organisations address this threat. The 24/7 SOC team continuously monitors for suspicious activities. Pentests and red teaming exercises test the effectiveness of existing security measures. In the event of an incident, the DFIR team is immediately available for forensic investigation and recovery. This requires a proactive security strategy that is regularly tested and updated based on the current threat landscape. Organisations that invest in prevention and preparation save significantly on incident response costs. ISO 27001 provides a proven framework for structurally organising information security.