Clavister Achieves ISO 27001 Certification

Örnsköldsvik, Sweden – 26 August 2025 – Clavister, a European leader in cybersecurity for mission-critical applications, today announced that its management system has been certified against the ISO/IEC 27001 standard, the world’s leading benchmark for information security management.
This milestone underscores Clavister’s commitment to protecting sensitive data, ensuring the highest standards of security, and enabling trusted partnerships with customers and stakeholders across critical sectors such as public administration, telecom and defence.
“Achieving ISO 27001 certification is a major step forward in our strategy,” said John Vestberg, CEO of Clavister. “For many of our stakeholders, this certification is not just important – it is mandatory. By meeting this internationally recognised standard, we make it easier for future partners, prospects, and customers to assess and trust the quality of our ways of working.”
The certification process began in May 2024 and concluded with a comprehensive audit in May 2025 conducted by DNV, one of the world’s leading certification bodies. ISO/IEC 27001 is the globally accepted standard for establishing, implementing, maintaining, and continually improving an information security management system. Certification verifies that Clavister applies systematic risk management processes to safeguard data confidentiality, integrity, and availability.
“While this certification is an important achievement, it also marks the beginning of a continuous process,” added Vestberg. “We will maintain and evolve our management system with annual DNV audits to ensure we keep meeting the highest standards.”
Clavister’s ISO 27001 certificate is now available for stakeholders and partners upon request.
About Clavister
Clavister is a specialised Swedish cybersecurity company, protecting customers with mission-critical applications for more than two decades. Founded and headquartered in Örnsköldsvik, Sweden, Clavister pioneered one of the first firewalls and continues to build robust and adaptive cybersecurity solutions since. Empowering a growing ecosystem of partners and resellers, we are serving customers in more than 100 countries with deployments across the public sector, energy, telecom and defence sectors.
The stock, Clavister AB, is listed at Nasdaq First North Growth Market. FNCA Sweden AB is the Company’s Certified Advisor.
For additional information, please visit https://www.clavister.com/, and follow us on our official LinkedIn and YouTube channels.
For further information, please contact:
John Vestberg, President and CEO
Tel: +46 (0) 660 29 92 00
E-mail: john.vestberg@clavister.com