ISO 27001 Certification

  • Fabian Sinner
  • February 20, 2024

Table of content

    ISO 27001 Certification

    The ISO 27001 certification is an international standard for information security management systems (ISMS). It was developed by the International Organization for Standardization (ISO) in collaboration with the International Electrotechnical Commission (IEC).

    ISO 27001 certification is proof that a company or organization has introduced a systematic and documented management process to protect the confidentiality, integrity, and availability of information it handles.

    What is an ISMS?

    An information security management system (ISMS) is a framework of policies and procedures designed to protect information. It helps organizations to systematically manage their information security risks, ensure compliance, and continuously improve their security culture.

    What exactly is ISO 27001?

    The ISMS according to ISO 27001 is based on a process approach for planning, implementing, operating, monitoring, reviewing, maintaining, and improving information security. The standard specifies requirements to assess potential security risks and implement appropriate controls to minimize or eliminate them. These controls include technical measures as well as organizational processes and guidelines.

    Companies seeking ISO 27001 certification undergo an extensive process that includes a thorough review of their ISMS by an independent certification body. Upon successful completion, they receive a certificate confirming that their information security management system meets the requirements of the standard.

    This certification is not only a sign of a high level of security but it can also strengthen the trust of customers and partners. It is often a prerequisite for tenders and contract negotiations.

    How does the audit by the certification body work?

    The external audit for ISO 27001 certification is a critical and detailed process that is usually divided into two main phases.

    Phase 1: On-site assessment (readiness assessment)

    This phase aims to assess whether the company is ready for the more comprehensive phase 2 audit. During this stage, the auditor checks whether the company meets the basic requirements of ISO 27001 using key documentation about the ISMS. This includes the information security management system itself, the scope of the ISMS, the risk assessment and treatment procedures, and the security policy.

    It also assesses whether the processes and controls have been implemented appropriately and whether the company is ready to enter phase 2 of the audit. At the end of phase 1, the auditor provides feedback on any deficiencies or areas that need to be improved before phase 2. This results in a plan for the phase 2 audit.

    Phase 2: Detailed audit of the ISMS (compliance audit)

    This phase focuses on confirming full compliance of the ISMS with the requirements of ISO 27001. The effectiveness of the ISMS in practice is tested here. The auditor carries out a detailed examination of all aspects of the ISMS. This includes checking whether the guidelines and procedures defined in the ISMS are implemented in day-to-day business practice.

    Interviews are conducted with employees and processes are observed to check whether they understand the security guidelines and whether these are applied appropriately. The auditor samples data and records and may perform tests to verify the effectiveness of certain controls and measures.

    Upon completion of the audit, the auditor prepares a report detailing the findings, including any non-conformities identified. If the company meets the requirements of ISO 27001, certification is granted. If non-conformities are found, the company must first rectify them and possibly have a follow-up audit carried out.

    What are the benefits of ISO 27001 certification?

    ISO 27001 certification offers a number of benefits, both in terms of improving information security and in other operational and business areas.

    • Improved information security: By implementing an ISO 27001 Information Security Management System (ISMS), organizations are helped to protect their information more effectively. This includes measures to ensure the confidentiality, integrity, and availability of data.
    • Risk management: ISO 27001 helps organizations to systematically identify, analyze, and manage their security risks. This leads to better risk management and mitigation.
    • Compliance with legal requirements: Compliance with ISO 27001 can ensure that organizations meet relevant legal, regulatory, and contractual requirements relating to data protection and data security.
    • Improving customer confidence: ISO 27001 certification can serve as a vote of confidence for customers and business partners. It shows that the company has a serious commitment to information security.
    • Competitive advantage: In many industries, ISO 27001 certification is seen as a mark of quality. It can give a company a competitive advantage, especially in tenders and contract negotiations.
    • Process improvement: Implementing an ISO 27001 ISMS can lead to more efficient and effective business process design, as it often requires the review and optimization of existing processes.
    • Employee awareness and participation: Certification promotes employee awareness and participation in relation to information security, leading to a stronger security culture within the organization.
    • Response to security incidents: A certified ISMS includes procedures for effective incident management, which means that organizations are better prepared for security incidents and can manage them more efficiently.
    • Internationally recognized standard: Because ISO 27001 is internationally recognized, it helps organizations comply with global security standards and operate in international markets.

    ISO 27001 certification and CRITIS

    ISO 27001 certification is particularly relevant for operators of critical infrastructure (CRITIS), as these organizations provide basic services that are essential for the functioning of society and the economy. This includes sectors such as energy, water, healthcare, finance, transportation, telecommunications, food, and government administration.

    CRITIS operators often manage highly sensitive data that is essential for the maintenance of important social and economic functions. ISO 27001 helps to protect this data effectively. The standard enables systematic identification and assessment of information security risks. It is crucial for CRITIS to minimize risks that could lead to failures or impairments of critical services.

    Many countries have specific security regulations for CRITIS operators. ISO 27001 helps these organizations to meet legal and regulatory requirements, especially with regard to data protection and information security.

    As CRITIS operators are of high importance to society and the economy, the trust of the public, regulators, and customers in their security measures is crucial. ISO 27001 certification can serve as proof of trust.

    In case you didn’t know: Link11 itself has a ISO 27001 certification and is therefore ideally prepared to work successfully with KRITIS operators. You can find the official certificate here.

    Link11 presents its Partner Program
    Infographic: 10 Facts about the Cloud