Supplier Assurance Guidance

Purpose

This guidance note helps supplier owners and reviewers apply the supplier security documents in a proportionate way.

Focus On Material Suppliers

Not every supplier needs the same depth of review. More attention should be given to suppliers that:

host or process important BlackDice data
support production service delivery
have privileged access
affect resilience or customer commitments
operate as subprocessors or critical dependencies

Questions To Ask During Review

Useful supplier review questions often include:

what service is actually being provided
what information is handled
what access is granted
what happens if the supplier fails
what evidence exists for security and resilience
what notification obligations apply

Shared Responsibility

For cloud and managed platforms, supplier review should not stop at "provider is certified". The practical question is which controls remain with BlackDice and which are delivered by the supplier.

That matters most for:

identity and access
configuration
logging
backup and recovery
incident handling
data location and retention

When To Reassess

Reassessment should be triggered when:

the supplier's role expands
the deployment model changes
a major incident occurs
assurance evidence becomes stale
customer or regulatory expectations change

../../01-policies/supplier-security-policy.md
../../02-standards/supplier-due-diligence-standard.md
../../03-procedures/supplier-onboarding-and-review-procedure.md
../../04-registers/supplier-register-template.md

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