What is NIS2 and since when does it apply?
NIS2 (EU Directive 2022/2555) is the second iteration of the Network and Information Security Directive. In Germany it was implemented via the NIS2 Implementation and Cybersecurity Strengthening Act (NIS2UmsuCG), which entered into force on December 6, 2025. About 29,500 German companies are subject to the duties for the first time.
Are we affected by NIS2?
Three criteria trigger the duty: sector (18 NIS2 sectors such as energy, transport, banking, health, IT services, manufacturers of certain products), size (mid-sized companies from 50 employees and €10 million revenue), and criticality (KRITIS classification). We check applicability in the first hour of the initial conversation.
How high are the penalties?
NIS2 provides penalties for particularly important entities of up to €10 million or 2% of global annual turnover. For important entities up to €7 million or 1.4% turnover. Plus a direct personal liability for management — the board stands personally accountable, not only IT.
What does NIS2 implementation cost?
For mid-sized companies we realistically budget an implementation between €50,000 and €150,000. This covers assessment, gap analysis, configuration of the Microsoft tools (Purview, Entra ID, Defender), training, and building the reporting duties. Ongoing costs add via licenses and continuous monitoring.
Is the Microsoft stack enough for NIS2 compliance?
For most requirements, yes. Microsoft Purview, Microsoft Entra ID, Microsoft Defender, and Microsoft Sentinel cover the bulk of the NIS2 requirements. Gaps remain in OT security (operational technology, machine control), specific industry requirements, and physical protection. We address those gaps via partners.
How long does a NIS2 implementation take?
Realistically 6 to 12 months for mid-sized companies — from initial assessment to productive operation of the compliance tools. Quick wins (multi-factor authentication, Conditional Access, basic DLP rules) can be implemented in 4 to 8 weeks. Full maturity including incident-response processes takes longer.
What's the difference from GDPR?
GDPR protects personal data. NIS2 protects the availability and integrity of critical services — i.e., cybersecurity in a wider sense, with clear duties on risk management, incident reporting (24-hour deadline!), and management liability. Both regulations interlock but cover different protected assets.