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New Apple security feature reboots iPhones after 3 days, researchers confirm

(techcrunch.com)
286 points joegibbs | 3 comments | 15 Nov 24 01:55 UTC | HN request time: 0.001s | source
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arcticbull ◴[15 Nov 24 03:08 UTC] No.42143642[source]▶
Periodic reboots are actually a PCI requirement for payment terminals heh, basically every point of sale on the market reboots every 24h.
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Gigachad ◴[15 Nov 24 03:21 UTC] No.42143696[source]▶
Seems like a good defence in depth strategy. These days most systems have a pretty good boot chain security, so after a reboot you know the system is in a valid state and any potential malicious changes have been flushed out.
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bugtodiffer ◴[15 Nov 24 08:24 UTC] No.42144910[source]▶
This is so damn sad. I don't fully get why I have to reboot after kernel updates but accept it, but just every 3 days? Why?
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saagarjha ◴[15 Nov 24 10:04 UTC] No.42145453{3}[source]▶
How do you expect to swap out your kernel without restarting your machine?
replies(1): >>42145552 #
1. sintax ◴[15 Nov 24 10:24 UTC] No.42145552{4}[source]▶
Don't know about apple, but on linux you can live patch a running kernel with security updates (kpatch/ksplice/...).
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2. saagarjha ◴[15 Nov 24 10:38 UTC] No.42145615[source]▶
Right, which means that an attacker can trick your kernel into patching itself to do something malicious.
replies(1): >>42145743 #
3. dizhn ◴[15 Nov 24 10:57 UTC] No.42145743[source]▶
And automatic periodical reboots give hackers the piece they were missing. :)