Advanced – Non-Functional Testing
Confidentiality – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The degree to which a product ensures that data are accessible only to those authorized to have access.
In simple words
Only the right people can read the data.
Exam tip
Sub-characteristic of Security in ISO 25010.
Related terms
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