A plurality of secure execution environments may be used to bind individual components and a computer to that computer or to blind computers to a given system. The surgical fastener is particularly but not solely intended to be used to attach rotator cuff tendons to bone. A block of cutting blades is displaceably secured above the base by a support frame. An authorization service determines whether a particular activity requested by the user should be granted or denied based upon whether the user has authorization to access the particular activity and whether the particular device can support the particular activity without comprising the security of the network.