Mobile network sharing could occur on different levels and with various sharing options in the mobile network infrastructure. Usually, these various sharing options require a thorough consideration of levels of protection. However, these levels of protection and security measures might affect the decision of selecting the types of sharing options. Vertical industries are facing a great challenge on selecting the suitable sharing option for their service and the adequate security for the particular mobile network infrastructure sharing option. This White Paper provides a reference for MNOs and vertical industries to identify the adequate security on each mobile network infrastructure sharing option.