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A comment on Apple’s T2 security chip jailbreak. Parent comment

Re:Apple’s T2 security chip jailbreak by tinus_hn on Wednesday September 30, 2020 @06:40AM (#24637278)
If it really matters, Apple can bring an update that blocks these attacks. If the system depends on security through obscurity, sorry, that never lasts.
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Re:Apple’s T2 security chip jailbreak by saagarjha on Wednesday September 30, 2020 @07:06AM (#24637458)
Apple cannot update this away; the vulnerability goes down to the very lowest levels of the software to the code burned into ROM.
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Re:Apple’s T2 security chip jailbreak by selectodude on Wednesday September 30, 2020 @08:11AM (#24637916)
They were able to update it away on the iPhone X. Checkrain doesn’t work on iOS 14 anymore.
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Re:Apple’s T2 security chip jailbreak by saagarjha on Wednesday September 30, 2020 @08:26AM (#24638038)
Well, somewhat. They’re doing a clever side channel based on the SEP’s RNG to panic the device when booting from DFU, but this has already been bypassed on older devices via a bug in SEPROM. I believe they already have code execution in the A11’s enclave as well, but that one has some sort of replay protection that complicates matters.
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