One of the areas that Apple has made big improvements with the release of the 2017 iMac Pro is the introduction of SecureBoot. SecureBoot is a process where the firmware validates the bootloader prior to loading. It is at the start of the chain of trust that ensures that code that gets run (drivers, kernel, applications) is known and validated. It all starts with the initial boot and with the release of the iMac Pro, Apple introduced SecureBoot to ensure that the initial bootloader is trusted.

Timothy Perfitt takes a deep dive into Apple’s SecureBoot and the new iMac Pro.