The BSI Criteria Catalogue C5 is a document that has been provided by the Federal Office for Information Security (BSI) in Germany to support customers in selecting, controlling, and monitoring their cloud service providers (CSPs). The C5 stands for Cloud Computing Compliance Criteria Catalogue and specifies minimum requirements for secure cloud computing. The C5 is primarily intended for professional CSPs, their auditors, and customers of the CSPs. The C5 covers 17 domains and 114 control objectives that address all key aspects of cloud security, such as data protection, identity and access management, encryption and key management, incident response, audit assurance, and compliance. The C5 also maps to other industry-accepted security standards, regulations, and frameworks, such as ISO 27001/27002/27017/27018, NIST SP 800-53, CSA Cloud Controls Matrix (CCM), COBIT, GDPR, etc. The C5 helps customers to evaluate and compare the security and compliance posture of different CSPs, and to verify that the CSPs meet their contractual obligations and legal requirements12.
References:
* BSI - C5 criteria catalogue - Federal Office for Information Security
* Germany C5 - Azure Compliance | Microsoft Learn