←back to thread

452 points akyuu | 3 comments | | HN request time: 0s | source
Show context
derbOac ◴[] No.45766747[source]
They couldn't answer the question most on my mind: "We’ve reached out to Google to inquire about why a custom ROM created by volunteers is more resistant to industrial phone hacking than the official Pixel OS. We’ll update this article if Google has anything to say."
replies(10): >>45766778 #>>45777056 #>>45778032 #>>45778056 #>>45779079 #>>45779102 #>>45779404 #>>45780503 #>>45781099 #>>45783125 #
IncreasePosts ◴[] No.45777056[source]
Is grapheheOS actually harder to hack or does cellebrite just not put a lot of effort into supporting it because the very low odds of LEs running into one in the wild?
replies(5): >>45777082 #>>45777144 #>>45777155 #>>45779084 #>>45779157 #
zb3 ◴[] No.45777144[source]
It physically disables USB ports when locked which significantly reduces the attack surface + can be configured to automatically reboot.
replies(2): >>45777712 #>>45778612 #
fph ◴[] No.45777712[source]
Two fixes that would be trivial to backport to mainline Android.
replies(3): >>45777832 #>>45777836 #>>45779218 #
vbezhenar ◴[] No.45777832[source]
You can configure USB port for charging only in the developer options.
replies(5): >>45777859 #>>45778136 #>>45779058 #>>45779241 #>>45781153 #
1. tranq_cassowary ◴[] No.45779058[source]
That only turns it of on the OS level. GrapheneOS also turns it off on the level of the USB controller.
replies(1): >>45779247 #
2. strcat ◴[] No.45779247[source]
That standard Android toggle doesn't turn off USB support at the OS level but rather controls the default USB gadget mode. USB gadget functionality is one part of the high level USB functionality. That doesn't block USB peripherals, USB-C alternate modes, etc. and leaves nearly all the kernel attack surface being exploited by Cellebrite intact.

See https://news.ycombinator.com/item?id=45779241 which explains this.

replies(1): >>45779290 #
3. tranq_cassowary ◴[] No.45779290[source]
Thanks, I was confusing it with the Advanced Protection feature.