Advanced – Non-Functional Testing
Security (ISO 25010) – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The degree to which a product protects information and data so that persons or other products have the degree of data access appropriate to their types and levels of authorization.
In simple words
Confidentiality, integrity, non-repudiation, authenticity, accountability.
Exam tip
One of the eight ISO 25010 product quality characteristics.
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