Checkm8, the iPhone 4s to iPhone X bootrom exploit, explained

[iMore.com]

Checkm8 is a bootrom-level security exploit that can be used against every iPhone from the 4S to the X. It was announced late last week by axi0mX — axi0mX… axi0m10… dammit, Apple! — and ever since we've seen everything from fear, uncertainty, and doubt, to supremely good reporting on what it is, what it isn't, and most importantly, what it means for all of us. So, let's try to sort it all out.

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