C5 Consulting: Efficiently achieving certified cloud security
The Cloud Computing Compliance Criteria Catalogue (C5) is the leading audit standard for cloud security in Germany. Proliance helps cloud service providers meet these security requirements and obtain C5 attestation.
ISO 42001: Expert guidance for an efficient AI management system
ISO/IEC 42001:2023 provides a structured framework for companies looking to develop, deploy, and use AI systems securely. To ensure the standard brings clarity rather than complexity, our AI and compliance experts are here to guide you through an efficient implementation.
Securely achieve C5 compliance with Proliance
Risks of incorrect implementation
- Unauthorized access to sensitive cloud data due to unclear permissions
- Failing the audit because security measures cannot be verified
- Duplicated work due to uncertainty about which C5 requirements are already met
Benefits of implementation with Proliance
- Transparent and comprehensive role and permissions concept
- Clean, audit-ready documentation of all measures
- GAP analysis identifies necessary measures for C5 certification
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Achieve C5 compliance quickly and securely with expert guidance
C5 consulting from Proliance for efficiency on the path to certification
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5 steps to C5 compliance for resilient cloud environments
Our C5 consulting identifies which measures require your special attention, helping you set the right priorities on your path to certification. Proliance’s consulting process is tailored to your company’s individual needs, with a focus on providing clarity and reducing your workload.
01 - Conducting a gap analysis
We work with you to assess your current security measures and identify any gaps that need to be addressed to meet the C5 criteria. In doing so, we take existing certifications, such as ISO 27001, into account.
02 - Implementing C5 controls
If your organization lacks security policies, we can help you implement them. We will show you how to execute measures across all 17 control areas and create audit-ready documentation.
03 - Processing environmental data
C5 requires extensive documentation, for example regarding data center locations, data flows, and sub-service providers, which we will help you set up comprehensively.
04 - Coordination with the auditor
An audit firm performs the attestation. We support you in preparing for your Type 1 or Type 2 audit and guide you through the entire audit process.
05 - Support for annual re-certification
Security measures must be reviewed annually and adapted to keep pace with technological developments or emerging threats. We are happy to provide long-term support for this process upon request.
Your point of contact for all compliance issues
Obtaining a C5 attestation can be a significant undertaking, especially for smaller companies. Our consultants ensure you don't spend any more time than necessary on compliance measures and audit preparations. We speak your language—get in touch with us and book your 30-minute initial consultation now.
Florian Mueller
Fabian Schroeder
Gregor Hofmann
Marcus Geck
Miriam Massarski
Dennis Zwirner
Is C5 consulting right for your company?
How to meet the key C5 requirements with Proliance
Why your company needs C5 consulting
Supplementary services for comprehensive C5 compliance
Looking to make your cloud offering completely secure? We provide end-to-end consulting and show you the most efficient path to holistic C5 compliance and information security, without overburdening your resources or teams.
Implement compliance holistically and sustainably across all areas
Do you want to protect your information and data holistically, beyond just the cloud? Whether it's DORA, NIS2, or GDPR: Proliance helps you build a solid foundation. We support you every step of the way with expert advice, extensive industry experience, and our compliance platform.
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Frequently Asked Questions from Companies about ISO 42001 Consulting
The Cloud Computing Compliance Criteria Catalogue (C5) is the leading German security standard for cloud services, developed by the Federal Office for Information Security (BSI). It defines minimum requirements for information security, transparency, and data protection in cloud environments, which companies can verify by obtaining a C5 attestation.
A Type 1 report confirms that your security measures are in place and appropriately designed at a specific point in time. A Type 2 report goes further, verifying that these measures have been consistently applied and are operating effectively over an observation period of at least six months. For regulated industries and public sector clients, a Type 2 report is generally mandatory.
The C5 attestation is issued exclusively by independent auditors. They verify whether your security measures meet C5 requirements and subsequently produce the official audit report. Proliance provides a structured approach to preparing you for this external audit and supports you throughout the coordination process with the auditor.
The C5 attestation applies only to the specific cloud services audited and, in some cases, only to certain regions. This means you can have individual services audited selectively and expand the scope step by step. Proliance will help you define the most sensible scope for your specific situation.
This depends on your starting point. If you already have ISO 27001 certification and a mature cloud security architecture, a Type 1 report can be achieved in about 3 to 6 months. For a Type 2 report, you must add a minimum observation period of 6 months. Proliance ensures that you make efficient use of this time.
ISO 27001 certification provides a valuable foundation for the C5 attestation. C5 builds upon this standard, and many controls are already covered. However, ISO 27001 certificates cannot be used directly as evidence in a C5 audit. Furthermore, C5 includes cloud-specific requirements that are not covered by ISO 27001. As part of a gap analysis, Proliance will determine exactly what your existing certification already covers and what is still missing.