At Nesp.ONE , cybersecurity Nesp.ONE not just documentation – we ensure that IT compliance works within the organization and becomes an integral part of daily operations.

Nesp.ONE is a Danish company with experts in cybersecurity and compliance consulting. We help organizations in Denmark and internationally navigate complex security and regulatory requirements.
We combine technical expertise with practical implementation, ensuring that standards and regulatory requirements are translated into solutions that work in practice.


















What we do
Nesp.ONE helps organizations translate IT security and compliance requirements into concrete, practical solutions. Our work is based on the organization’s risk profile, maturity level, and business context, and ranges from analysis and consulting to the implementation and documentation of security measures that work in practice.
– including NIS2, ISO 27001, secure software development, the AI Act, and the secure use of AI in both businesses and municipalities.
We supplement our consulting services with targeted courses and skills development programs, so that employees, management, and IT staff gain the necessary understanding and knowledge to work securely and compliantly on a daily basis. Our goal is for security and compliance to become an integral part of the organization—not a standalone project or an administrative burden.
What we do
ISO 27001 certification
Certification and Safety Management
NIS2
Requirements, Responsibilities, and Practical Compliance
AI Act
Responsible Use of Artificial Intelligence
Cyber Resilience Act
Security Requirements for Digital Products
Secure Software Development Life Cycle
Safety Built Into the Development Process
Cyber Contingency Plan
A Clear Plan for Cyberattacks and System Outages
Course + Webinar
Professional knowledge put into practice
Our founders

Karsten Dahl Vandrup Partner
Cybersecurity expert · Associate professor · Advisor
Karsten is a cybersecurity expert and lecturer specializing in NIS2, ISO 27001, and practical ISMS. He advises companies and organizations in Denmark and internationally on translating regulatory requirements into practical and documented information security. He is the author of IT Security in Practice and a member of ENISA's certification committee.

Martin Schulze Partner
CISO · Security expert · Advisor
Martin is a security expert and CISO with over 30 years of experience in information security, compliance, and Microsoft-based platforms. He helps organizations in Denmark and around the world build, implement, and embed security and compliance practices.

Arne Djernæs Hansen
Board member · Strategic advisor
Arne has more than 35 years of experience in management and business development in the IT industry and has held leadership roles at international IT and outsourcing companies, including as Nordic Director at Ciklum. Arne has in-depth knowledge of the hardware and software industries, as well as the IT consulting sector in Denmark and internationally
Find and contact us
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