This proposed ISO standard will specify requirements for the security-minded management of projects utilizing digital technologies, associated control systems, for example building management systems, digital built environments and smart asset management. It outlines security threats to information during asset:. • conception, strategy and briefing; • procurement; • design; • construction; • commissioning and handover; • operation and maintenance; • performance management; • change of use/modification; and • disposal/demolition. It will explain the need for, and application of,trustworthiness and security controls throughout a built asset’s lifecycle (including the full project lifecycle) to deliver a holistic approach encompassing: • safety; • authenticity; • availability (including reliability); • confidentiality; • integrity; • possession; • resilience; and • utility. The standard will address the steps required to create and cultivate an appropriate safety and security mindset and culture across many partners, including the need to monitor and audit compliance. It will provide a foundation to support the evolution of future digital built environments, for example intelligent buildings, infrastructure and smart cities, but does not detail technical architectures for their implementation. While the processes contained within it may be applicable to other data management systems, this PAS does not specifically address issues relating to these systems.