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ISO 27001 Annex A evidence

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five9.comCommunications and CPaaSLast verified 21 Sep 2026
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ISO/IEC 27001:2022, Annex A controls 5.19 to 5.23

Five9 against ISO 27001 Annex A’s vendor requirements

4 provisions of ISO 27001 Annex A reach the vendors you rely on. For each, the public evidence from Five9 that may support it, with its date and source.

2 evidence found2 no public evidence
Annex A 5.19

Information security in supplier relationships

Processes are defined and implemented to manage the information security risks associated with the use of suppliers’ products or services.

Evidence found

  • Independent security assurance

    Evidence found

    A current SOC 2 report or ISO/IEC 27001 certificate is the usual evidence that a supplier operates appropriate security measures.

    • SOC 2Vendor states SOC 2 Type 2 on its trust centreas of 21 Sep 2026
    • ISO/IEC 27001Vendor states ISO/IEC 27001:2022 on its trust centreas of 21 Sep 2026
    • CSA STARVendor states CSA STAR on its trust centreas of 21 Sep 2026
    • BSI C5Vendor states C5 on its trust centreas of 21 Sep 2026
    • and 7 more
Annex A 5.20

Security within supplier agreements

Relevant information security requirements are established and agreed with each supplier, based on the type of relationship.

No public evidence

  • Data processing agreement

    No public evidence

    The DPA is where processing instructions, confidentiality, security, sub-processing and audit rights are written down.

Annex A 5.21

The ICT supply chain

Processes are defined to manage the information security risks associated with the ICT products and services supply chain.

No public evidence

  • Published subprocessor list

    No public evidence

    A current list of subprocessors, with purpose and location, is how a customer knows who else touches its data.

Annex A 5.23

Information security for cloud services

Processes for acquiring, using, managing and exiting cloud services are established in line with the organisation’s information security requirements.

Evidence found

  • Cloud security assurance

    Evidence found

    ISO/IEC 27017 and 27018 and the CSA STAR registry cover controls specific to cloud services.

    • CSA STARVendor states CSA STAR on its trust centreas of 21 Sep 2026
    • ISO/IEC 27017Vendor states ISO/IEC 27017:2015 on its trust centreas of 21 Sep 2026

  • Independent security assurance

    Evidence found

    A current SOC 2 report or ISO/IEC 27001 certificate is the usual evidence that a supplier operates appropriate security measures.

    • SOC 2Vendor states SOC 2 Type 2 on its trust centreas of 21 Sep 2026
    • ISO/IEC 27001Vendor states ISO/IEC 27001:2022 on its trust centreas of 21 Sep 2026
    • CSA STARVendor states CSA STAR on its trust centreas of 21 Sep 2026
    • BSI C5Vendor states C5 on its trust centreas of 21 Sep 2026
    • and 7 more

Questions buyers ask

Is Five9 ISO 27001 Annex A compliant?

CertReports does not decide that. It shows the public evidence that may support each ISO 27001 Annex A requirement that reaches vendors: evidence was found or is available on request for information security in supplier relationships (Annex A 5.19), information security for cloud services (Annex A 5.23), and nothing public was found for security within supplier agreements, the ict supply chain.

What should I ask Five9 for?

Request data processing agreement, published subprocessor list, and confirm each is current.

Reading for ISO 27001 Annex A reviews

All articles

This maps third-party obligations to the vendor evidence that may support them. It is not legal advice and never a statement that a vendor or its customers comply; confirm scope and sufficiency with your counsel or auditor. “No public evidence” means nothing public was found at the last check. Citations link to the official text.

Requirements reviewed 21 Sep 2026. The vendor lists the evidence on its trust centre behind a request or NDA; ask for it.