Measurement in support of safety and security management

The need for measurement to support the development and operation of safety- and security-critical systems is being increasingly recognised, and there is a growing body of reported work. Management systems are required by applicable standards in both fields, with implied codification and quantification, where appropriate. This paper summarises an on-going effort to apply a systematic measurement method to these properties. Work draws on the measurement framework of ISO/IEC 15939:2002, and the supporting materials of the practical systems and software (PSM) project.