Well, considering that I also wrote "theses" in that sentence, let's assume that I knew that "cite" is the proper spelling and I simply didn't spell-check it. Likewise, it looks like you misplaced an 'f' for an 's' in "addresses) - is offline :(" - probably just a typo.
Also, when researching further, I came across a sensible explanation for the in-feasibility of this "secret backdoor 3G capability." He explains it better than I could, currently:
"Well, let's be realistic. 3G requires an antenna. Those i5 and i7 chips I've been working with need to sit under a massive copper heat-pipe-heatsink to work at all. Last I was able to check, 3G doesn't work in a 5 ounce copper faraday cage.
And, they consume no small amount of power.
So, for this to work, the CPUs would need their own power source, but 3G doesn't work like that, no power source is included, and the setup is not passively powerable. The smallest 3G capable radios are burning microwatts, but that's far from nothing at all. Where do those microwatts come from when the CPU is off?
Also, 3G uses 800, 850, 1700, 1900, and 2100 mhz, depending. My spec-an doesn't show anything in these bands when my CPUs are off.
So: When do these stealth 3G chips activate?
Where do they get their power?
And how do they work from inside a computer, under a big heatsink, with a 2 oz copper-clad motherboard underneath?
And why can't I see the 3G footprint from an Intel CPU on my spectrum analyzer?
Oh, and assuming all of the above was working, whose account pays for the 3G bandwidth these backdoors use? No SIM card?
Let's approach breathless claims like this with a bit of analytical skepticism, until such things can be proven. Perhaps the author is heavily vested in AMD?"
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SoW, Fall 2013 - Professors' Commentary
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