The BSI does not supervise C5 audits or check C5 reports; it publishes the criteria but takes no part in testing or approving attestations.

Checked 2026-10-02

Vendor
BSI
Product
C5
Subsystem
assurance model
Deployment
multi-tenant
Region
de
Release range
C5:2020 and C5:2026
Checked
2026-10-02

Sources

Cite this note

APA

WarmTransfer. (2026, October 2). UC and CCaaS security certifications: source note ucaas-compliance-certifications-c5-bsi-no-review. WarmTransfer. https://warmtransfer.net/knowledge/claims/ucaas-compliance-certifications-c5-bsi-no-review

BibTeX

@misc{warmtransfer-claim-ucaas-compliance-certifications-c5-bsi-no-review,
  title  = {UC and CCaaS security certifications: source note ucaas-compliance-certifications-c5-bsi-no-review},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/ucaas-compliance-certifications-c5-bsi-no-review},
  note   = {Source note ucaas-compliance-certifications-c5-bsi-no-review, checked 2026-10-02}
}

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