[guardian-dev] Good article on baseband

Tom Ritter tom at ritter.vg
Fri Nov 15 09:36:17 EST 2013


I'm not an expert in this, but I've been perusing it a bit recently.
I'm told that article is a bit out of date by randoms on twitter,
although this research was presented this week:
https://rpw.io/slides/rpw-pacsec2013-hexagon.pdf

Also, FWIW, I can count at least five OSes in my phone (for a
definition of OS that defines a trust boundary, privileged code,
ability to install applications or backdoor, and a hunch):
1) Android
2) Baseband
3) Mobicore running in Trustzone
4) SIM Card
5) Secure Element hardware device

-tom

On 13 November 2013 15:09, Lee Azzarello <lee at guardianproject.info> wrote:
> This is one of the few in depth articles I've read about baseband in
> cellular devices.
>
> http://www.osnews.com/story/27416/The_second_operating_system_hiding_in_every_mobile_phone
>
> -lee
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