C5 Field Guideunofficial

COM · Compliance

COM-04 Information on Information Security Performance and Management Assessment of the ISMS

3 sub-criteria: 1 basic, 2 additional

Changed since C5:2020

Basic criterion

No change.

Additional criterion

Additional criterion newly included.

Wording in C5:2020

Basic criterion

The top management of the Cloud Service Provider is regularly informed about the information security performance within the scope of the ISMS in order to ensure its continued suitability, adequacy and effectiveness. The information is included in the management review of the ISMS at is performed at least once a year.

All changes since C5:2020

Basic criterion

COM-04.01B

The top management of the cloud service provider is regularly informed about the information security performance within the scope of the ISMS in order to ensure its continued suitability, adequacy and effectiveness. The information is included in the management review of the ISMS. This management review is performed at least once a year.

Supplementary information

The top management is a natural person or group of people who take final decisions for the institution and are accountable for these.

The aspects to be dealt with in the management review of the ISMS are listed in section 9.3 of ISO / IEC 27001.

Additional criterion

COM-04.01AC

Additional, complementing

The cloud service provider defines and implements technical and operational metrics that align with the organisation's business objectives, security requirements, and compliance obligations. These metrics are documented and included in the management review of the ISMS to ensure their continued suitability, adequacy, and effectiveness.

COM-04.02AC

Additional, complementing

The responsible business units of the cloud service provider report at least annually to the top management on the the status and effectiveness of the policies and procedures that are relevant to the top management review of the information security management system. This reporting includes at least:

  1. Implemented changes to address cybersecurity risks for the topic addressed in the policy or procedure;
  2. Information security incidents for the topic addressed in the policy or procedure and the follow-up;
  3. Performance of the internal controls regarding information security for the topic addressed in the policy or procedure; and
  4. Planned changes for the topic addressed in the policy or procedure to address cybersecurity risks and information security and cybersecurity.

BSI text from C5:2026 and its changelog: © Federal Office for Information Security 2026, reproduced unchanged under CC BY-ND 4.0. Unofficial site, not affiliated with BSI. Licence and sources