Trust Modelling in 5G mobile networks

5G technologies will change the business landscape for mobile network operation. The use of virtualization through SDN, NFV and Cloud computing offer significant savings of CAPEX and OPEX, but they also allow new stakeholders to rent infrastructure capacity and operate mobile networks, including specialized networks supporting so-called vertical applications serving specific business sectors. In the resulting diverse stakeholder communities, the old trust assumptions between network operators will no longer apply. There is a pressing need for a far broader understanding of trust in such networks if they are to operate safely and securely for the engaged stakeholder communities. This paper describes the work carried out in the 5G-ENSURE project to address this need.