Jericho Forum aims to develop and influence information and communications technology(ICT) security standards.  These will facilitate the secure interoperation of ICT to support collaboration and commerce over open networks, within and between organisations, based on a security architecture and design approach entitled de-perimeterisation.  This document sets out Jericho Forum’s vision, mission  and intended roadmap for deperimeterisation.  Its purpose is to inform members and the wider public what Jericho Forum is about (its rationale) and does (its mode of operation).  Jericho Forum brings together a variety of organisations in public and private sectors, academia, and interested individuals. The common factor is that they realise that some traditionalapproaches to network and system security architecture and design cannot cope with some important contemporary business drivers for collaboration and commerce