ISO 27001 for MSSPs: Multi-Client Evidence and Audits

Scope patterns

• SOC / platform ISMS
• Corporate IT supporting delivery
• Explicit exclusions for customer-owned clouds

Hot controls

Privileged access to client tools, jump hosts, ticket confidentiality, and subprocessor diligence.

Evidence factory

Reusable playbooks plus per-client artefacts tagged carefully in GRC.

How CyberSilo Helps

• Evidence mapping in CyberSilo CSA
• Detection and logging proof with ThreatHawk SIEM
• Advisory scoping — contact CyberSilo

Frequently Asked Questions

Does our ISO cover client compliance?

No — it covers your ISMS; clients still need their own programmes.

Multi-site SOCs?

Include all delivery locations in scope or justify exclusions.

Customer references?

Use anonymised samples when NDAs block naming.

Related Resources

• ISO startups
• ISO hub
• CSA