Framework overlap

Does ISO 27043 cover SIG (Shared Assessments)?

You hold ISO 27043 and have been told to do SIG (Shared Assessments). Here is how much overlaps, control by control.

50% of SIG (Shared Assessments) you already have

ISO 27043 already covers about 50% of SIG (Shared Assessments), leaving 4 of 8 controls as genuinely new work.

Already covered 4 Likely covered 0 New work 4

What is genuinely new work

Nothing in ISO 27043 reaches these. This is the list to scope.

SHAREASSESS-5
Incident Response, BCM, DR
SHAREASSESS-6
Third Party / Subcontractor Management
SHAREASSESS-7
Privacy, Compliance, GDPR Alignment
SHAREASSESS-8
Cloud, SaaS, Infrastructure
Show the 4 you already have
SHAREASSESS-1
Information Governance and Risk
SHAREASSESS-2
Access Control, Identity, Authentication
SHAREASSESS-3
Network Security, Endpoint, Data Protection
SHAREASSESS-4
Vulnerability Management, Patching, Application Security

How this is calculated

Already covered means a mapping runs from a control in ISO 27043 to that control. Likely covered means no direct mapping exists but both frameworks map to the same control in a third standard. New work means neither. We keep those separate rather than adding them into one friendlier number, because blending them would present a two-hop inference as a verified fact.

Coverage is not symmetric. Run it the other way and you will get a different number; both are correct.

From 332,959 cross-framework control mappings across 723 frameworks, 531 of them verified against their source documents. It does not tell you that you are compliant: a mapped control means the two standards ask for the same thing, not that you have done it.

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