Thomas Benjamin:
> Sorry!
> 
> I don't know enough about USB thumb drives to answer those questions.
>  Perhaps someone else on this list can?
> 
> Thumb drives with user flashable firmware are rare, however one should
> still always be suspicious of any drive ordered through the mail.  It is
> better to go to a randomly chosen store and buy a randomly selected thumb
> drive.
> 
> 
> On Thu, Jan 2, 2014 at 5:01 PM, heath bunting 
> <[email protected]>wrote:
> 
>> On Thu, 2 Jan 2014, Thomas Benjamin wrote:
>>
>>  Yes.  They contain firmware that can potentially be flashed by the user
>>> and / or an adversary depending on the model.
>>> Be aware, of course, that even if you get a model that cannot be flashed
>>> by a user, if you get it by mail the adversary can still modify or replace
>>> the
>>> firmware before it before it gets to you.  We know that the NSA does this.
>>>
>>
>> so would you recomend a usb flash drive that allows the user to flash the
>> firmware ?
>>
>> if so, what open firmware should be flashed upon it ?
>>
>> and which models of usb flash drive can you suggest ?

An example:
I just opened the case of a USB thumb drive (give-away from my bank.. ha
ha) that has an IC from ALCOR MICRO, CORP. [1] on it, but I cannot yet
read the exact IC name.
On the website are various ICs (*) that "Support firmware upgrade
mechanism (ISP, In-System Programming)".
So apparently, there are upgrade mechanisms, but I don't know whether
they are usable via USB or just via the electrical interface etc.

[1]  http://www.alcormicro.com/en_content/index_en.php

(*) also for SD Cards; reminds me to 30c3 talk...

Cheers!


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