[Cryptography] Intel Management Engine pwnd

Dave Horsfall dave at horsfall.org
Wed Nov 29 19:24:30 EST 2017

On Wed, 29 Nov 2017, Henry Baker wrote:

> Ever since I got my latest Windoze laptop last year, I noticed that it 
> didn't retain all of its battery charge when *powered down*.

Same thing with my mobile ("cellular" to you Americans) phone; I can 
understand my iPad doing the same thing, but it doesn't even have a power 
switch (and neither does my cordless handset).  You bet I'm paranoid...

> I soon discovered that this laptop did retain nearly all of its charge 
> *when I removed the battery*.

But would it still be radiating, courtesy of an internal battery or a 

> So clearly, something below the operating system continues to run, and 
> run quite vigorously, in order to continue running down the battery.

Well, at the very least it has to maintain the time...

Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."

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