Fortunately, Apple regularly publishes their iOS Security Guide as criddel mentioned below and there is a vibrant Apple chip reverse engineering community that

Fortunately, Apple regularly publishes their iOS Security Guide as criddel mentioned below and there is a vibrant Apple chip reverse engineering community that does microscope analysis of Apple's chips [1]. 1. https://www.anandtech.com/show/11596/techinsights-confirms-apple-a10x-soc-10nm-tsmc https://www.anandtech.com/show/11596/techinsights-confirms-a...