Project archive · Technical University of Munich · 2025

Practical implementation of NIS-2 in small and medium-sized enterprises

Empirical study of implementation barriers and development of a standardised self-assessment model.

Summary

From abstract duties to concrete work packages

The project examined how mid-sized organisations perceive NIS-2, which internal and external barriers make it hard to get started, and how a structured self-assessment can help.

1,800SMEs in the empirical outreach
3,600email contacts over the course of the study
17semi-structured expert interviews
1standardised self-assessment model

Approach

Research design

01 · Field access

Broad SME outreach

Targeted outreach to organisations and decision-makers to get a realistic picture of how relevant NIS-2 was perceived to be at the time.

02 · Empirical work

Expert interviews

17 semi-structured conversations with people responsible for IT security, IT leadership, management and compliance, analysed in anonymised form.

03 · Transfer

Assessment model

Turning the findings into a traceable self-assessment with maturity levels and topic areas that can be prioritised.

Context: The field phase ran from 28 May to 15 July 2025. The qualitative sample of 17 interviews provides in-depth practical insight but is not statistically representative of German SMEs as a whole.

Interview findings

Why many companies had not yet taken action

The conversations revealed recurring organisational patterns, not just technical gaps.

Orientation

Regulatory uncertainty

Unclear applicability and open national details encouraged a wait-and-see attitude and made firm decisions harder.

Resources

Time and documentation

Scarce staff capacity, budgets and evidence obligations were often described as a greater burden than individual technical measures.

Transfer

Need for concrete guidance

Interviewees wanted clear, SME-friendly steps and a better fit with existing standards and processes.

Result

A tool for a pragmatic start

The self-assessment creates a shared working basis for management, IT and information security.

Assessment

Transparent implementation status

37 questions on implementation and 37 mirrored questions on evidence make existing measures and documentation gaps visible separately.

Prioritisation

From gap to roadmap

Identified gaps can be translated into concrete work packages and prioritised by risk, effort and dependencies.

Compatibility

Using existing standards

Mappings to ISO/IEC 27001, TISAX and BSI IT-Grundschutz help reuse existing ISMS structures.

Communication

Management-ready reporting

A standardised view of status and priorities improves alignment between specialists and decision-makers.

Research transfer

The model is available as a free tool

The NIS-2 self-assessment that came out of the project is provided by HvS-Consulting and can be used as a starting point for a structured review.

References covered NIS-2 ISO/IEC 27001 TISAX BSI IT-Grundschutz

Continuation

From the bachelor's thesis to the NIS-2 Realitätscheck

The first study took place during a period of regulatory uncertainty and a strong wait-and-see attitude. After the German NIS-2 implementation act came into force, the research design was continued in 2026 as a longitudinal follow-up study.

The results were presented at BSides Munich 2025, the BSI's 21st German IT Security Congress and the Elbsides Conference 2026.

Project status: The interview phase is complete. This page is an archive, not an open invitation to take part in the study.

Academic context

Technical University of Munich

The project was carried out as a bachelor's thesis in Information Systems at the Chair of Cyber Trust at the Technical University of Munich, supervised by Prof. Dr. Jens Großklags.

Author: Younes Ahmadzei.

This page is not an official publication of the Technical University of Munich.

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