[Cryptography] Intel Management Engine pwnd

[Dave Horsfall]

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 
supercap?

> 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."