[LINK] US voting machines - problems already
Kim Holburn
kim at holburn.net
Wed Nov 1 15:47:56 AEDT 2006
Yeah by vulnerable I meant CRTs are more vulnerable to
eavesdropping. CRTs are vulnerable to soft tempest as well as
tempest/van eck. Soft tempest is much simpler and may even be done
with a video camera. CRTs produce considerably more EM radiation
than LCDs. LCDs are still vulnerable to EM (van eck style)
eavesdropping. I don't believe van eck would allow you to do
anything more that eavesdrop.
http://citeseer.ist.psu.edu/kuhn02optical.html
http://citeseer.ist.psu.edu/kuhn04electromagnetic.html
While I would think this is important in a country that has secret
ballots. I'm surprised that AFAIK this has not been talked about by
the anti-e-voting people in the US.
When I look at the register article really carefully it does seem to
be about eavesdropping but it's not spelled out very clearly.
On 2006/Nov/01, at 11:14 AM, brd at iimetro.com.au wrote:
> I doubt that anyone could hack into a system through a CRT. They
> could eavesdrop
> but it's an output device and so it's like trying to change a word
> document by
> writing on the computer screen - notwithstanding jokes about [pick
> a group you
> want to insult] word processing operators and whiteout.
>
> Quoting Kim Holburn <kim at holburn.net>:
>
>> That'd be?:
>> http://www.theregister.co.uk/2006/10/31/
>> dutch_votingmachines_inadequate/
>>
>> It doesn't mention tempest though. It appears to be some kind of
>> active hacking through wireless. These days CRT screens are much
>> more vulnerable to van eck and optical tempest. LCD screens can
>> probably be shielded fairly simply.
>>
>>
>> On 2006/Nov/01, at 10:14 AM, Martin Barry wrote:
>>
>>> $quoted_author = "Howard Lowndes" ;
>>>>
>>>> There's also a story, I think at The Register, that the Dutch have
>>>> banned them because the screen radiation can be read at a distance.
>>>> Think TV detector vans in the UK and the Tempest standard. I
>>>> think the
>>>> radiation is called super heterodyne radiation.
>>>
>>> http://en.wikipedia.org/wiki/Van_Eck_phreaking
>>>
>>> "...is the process of eavesdropping on the contents of a CRT or
>>> LCD display
>>> by detecting its electromagnetic emissions."
>>>
>>> cheers
>>> marty
>>>
>>> --
>>> Tanuki: What is the collective term for more-than-one ninja?
>>> Matt S Trout: Not right, but "a silence of ninjas" appeals to me
>>> somehow.
>>> Tanuki: Or maybe a "stealth" of Ninjas?
>>> Mike Andrews: I believe that the correct answer is: A of
>>> ninjas.
>>> Tanuki: I sense deep wrongness here: is it not Zen-axiomatic that
>>> any Ninja who announces himself as such is _not_ a Ninja?
>>> Joe Block: So the perfect disguise would be for the ninja to
>>> walk around
>>> in a ninja suit, trying not to hide, then?
>>> Tanuki: Ah, the old argument that sometimes the best way to
>>> truly hide
>>> something is to put it where it will be obvious.
>>> From now on this will be known as "Security by Blatancy"
>>>
>>> alt.sysadmin.recovery usenet thread - start at <LOd8IKA8msYBFw
>>> $v at demon.co.uk>
>>
>> Awesome.
>>
>>
>> --
>> Kim Holburn
>> IT Network & Security Consultant
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>> Democracy imposed from without is the severest form of tyranny.
>> -- Lloyd Biggle, Jr. Analog, Apr 1961
>>
>>
>>
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Kim Holburn
IT Network & Security Consultant
Ph: +61 2 61258620 M: +61 417820641 F: +61 2 6230 6121
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Aust. Spam Act: To stop receiving mail from me: reply and let me know.
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Democracy imposed from without is the severest form of tyranny.
-- Lloyd Biggle, Jr. Analog, Apr 1961
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