BSI Cloud Security Standard

C5 Attestation Services

The C5 standard (Cloud Computing Compliance Criteria), issued by Germany's BSI (Federal Office for Information Security), establishes rigorous security and compliance benchmarks for cloud service providers. Achieving C5 attestation or C5 certification demonstrates robust cloud security practices, regulatory alignment, and enhanced customer trust. Accorp Partners helps cloud providers streamline their journey toward C5 cloud compliance, aligning closely with BSI requirements as well as global frameworks like SOC, ISO, and FedRAMP.Retry

AICPA
CISA

Why Accorp is Your Trusted Partner for C5 Compliance

Expert cloud auditors simplify and accelerate your C5 compliance. With automated workflows and multi-standard expertise, Accorp ensures a smooth, reliable attestation.

Proven Expertise

Years of experience helping organisations achieve C5 compliance, SOC, ISO, HIPAA, PCI DSS, FedRAMP, NIS 2, and other information security certifications.

International Recognition

Accredited and trusted by global authorities, providing credible C5 cloud certification and audit services.

Specialised Professionals

A team of CPAs, auditors, and cybersecurity experts with real-world cloud and infrastructure expertise.

End-to-End Support

From readiness assessments to full C5 attestation, including control mapping and audit readiness.

Technology-Driven

Leveraging automation and AI to speed up evidence collection and analysis.

Client-Centric Approach

Transparent communication, flexible timelines, and tailored solutions for long-term cloud compliance.

Our C5 Compliance Journey – Simple & Transparent

At Accorp Partners, our C-5 assessment methodology ensures comprehensive coverage of all 114 cloud security controls required by German BSI

Process 1

Planning

Define goals, scope, and milestones to align with BSI C5 certification requirements.

Process 2

Foundation Setup

Conduct a kickoff session to establish objectives, documentation needs, and audit timelines.

Process 3

Testing & Evidence Gathering

Evaluate and collect evidence for technical and organisational controls, with ongoing updates throughout the project.

Process 4

Reporting

Deliver actionable reports within 2–4 weeks — significantly faster than standard industry cycles.

Types of C5 Audit

Type 1 – Design Only
Type 1 – Design Only

Type 1 – Design Only

Validates control design at a point in time. Ideal for early-stage or fast-growing companies preparing for C5 cloud certification.

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Type 2 – Design & Operation
Type 2 – Design + Operating Effectiveness

Type 2 – Design & Operation

Evaluates control operation over 6–12 months. Required for full C5:2025 attestation and enterprise-grade assurance.

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PCI DSS Compliance
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