This document specifies a method for the classification of requirements based on severity and susceptibility. The classification method requires a system in line with the framework described in ISO 24096-1 to form a complete system.

This document:

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gives guidance on the needed elements for a consistent evaluation of the severity over time, and supports a company business model and its brand image;

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gives background to why additional parameters alongside severity are useful as a base for classification;

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adds susceptibility as a viable parameter along with severity;

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gives guidance on the methodology for classification requirements using severity and susceptibility.