Skip to main content
Informationssicherheit / NIS2

ISO 27001

The international standard specifying requirements for establishing, implementing, maintaining, and continually improving an ISMS.

ISO/IEC 27001 is the world's leading international standard for information security management. Published by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), it provides a systematic framework for managing sensitive company information so that it remains secure. The current version, ISO/IEC 27001:2022, includes a revised set of controls in Annex A.

The standard follows the "Plan-Do-Check-Act" (PDCA) improvement cycle and requires organizations to perform a risk assessment, define the scope of their ISMS, select applicable controls from Annex A, and document their approach in a Statement of Applicability (SoA). Compliance can be independently verified through an accredited certification audit, resulting in an ISO 27001 certificate valid for three years, subject to annual surveillance audits.

ISO 27001 certification is increasingly requested by enterprise customers, public sector clients, and regulated industries as evidence of a mature security posture. It is also recognized as a practical framework for meeting regulatory requirements such as NIS 2, DORA, and GDPR, making it a strategic asset for organizations seeking to demonstrate trustworthiness to stakeholders.

Legal Basis

ISO/IEC 27001:2022; EU Directive 2022/2555 (NIS 2); EU Regulation 2022/2554 (DORA)

Practical Example

A B2B SaaS provider wants to sell its software to enterprise customers in regulated industries. Several procurement processes require proof of ISO 27001 certification. The company scopes its ISMS around its cloud infrastructure and development processes, performs a risk assessment, implements controls from Annex A, and undergoes a two-stage certification audit with an accredited body. After successfully passing the audit, the certificate opens new business opportunities and simplifies customer due diligence.

FAQ

An ISO 27001 certificate is valid for three years. Annual surveillance audits are required in years one and two to confirm the ISMS remains effective. In year three, a full recertification audit is conducted to renew the certificate for another three-year cycle.
ISO 27001 defines the requirements for an ISMS and is the certifiable standard. ISO 27002 provides detailed implementation guidance for the controls listed in Annex A of ISO 27001. Organizations use ISO 27002 as a reference when deciding how to implement specific controls.
No. NIS 2 does not mandate ISO 27001 certification. However, having a certified ISMS is a strong way to demonstrate that the required security measures are in place, and it may be recognized by national authorities as evidence of compliance with the directive's risk management obligations.

How preeco supports you

Learn how our software supports you with this topic.

Learn more