ISO/IEC TS 19249:2017 provides a catalogue of architectural and design principles that can be used in the development of secure products, systems and applications together with guidance on how to use those principles effectively.
ISO/IEC TS 19249:2017 gives guidelines for the development of secure products, systems and applications including a more effective assessment with respect to the security properties they are supposed to implement.
ISO/IEC TS 19249:2017 does not establish any requirements for the evaluation or the assessment process or implementation.