ACOUSTIC SNOOPING ON TYPED INFORMATION

I thought this one was pretty cool...

"Li Zhuang, Feng Zhou, and Doug Tygar have an interesting new paper showing
that if you have an audio recording of somebody typing on an ordinary
computer keyboard for fifteen minutes or so, you can figure out everything
they typed. The idea is that different keys tend to make slightly different
sounds, and although you don't know in advance which keys make which
sounds, you can use machine learning to figure that out, assuming that the
person is mostly typing English text. (Presumably it would work for other
languages too.)"

Full article here:
http://www.freedom-to-tinker.com/?p=893

Imhotep

Imhotep

Definitely cool. I bet the Feds had this years ago though, kind of like
those evm? things that pick up what you are viewing on your monitor
from a good distance.

Brett Michaels From Poison

Brett Michaels From Poison wrote:

> Definitely cool. I bet the Feds had this years ago though, kind of like
> those evm? things that pick up what you are viewing on your monitor
> from a good distance.

Ya, I thought that was pretty interesting. I am sure, as you pointed out,
some gov't agency is already using it...


Imhotep

Imhotep

On Fri, 16 Sep 2005 13:47:42 -0400, Imhotep <>
wrote:

>Brett Michaels From Poison wrote:
>
>> Definitely cool. I bet the Feds had this years ago though, kind of like
>> those evm? things that pick up what you are viewing on your monitor
>> from a good distance.
>
>Ya, I thought that was pretty interesting. I am sure, as you pointed out,
>some gov't agency is already using it...

Read the book 'Spycatcher' - they were doing it with manual
typewriters years ago when they were state of the art.

--
Jim Watt
http://www.gibnet.com

Jim Watt

Theres something thats always intriguing and entertaining about
espionage..especially now in the tech age, where basically anyone can
invent new measures virtually..but as fascinating that is..it's also
equally if not moreso scary. Bon voyage privacy.

Brett Michaels From Poison

Jim Watt wrote:

> On Fri, 16 Sep 2005 13:47:42 -0400, Imhotep <>
> wrote:
>
>>Brett Michaels From Poison wrote:
>>
>>> Definitely cool. I bet the Feds had this years ago though, kind of like
>>> those evm? things that pick up what you are viewing on your monitor
>>> from a good distance.
>>
>>Ya, I thought that was pretty interesting. I am sure, as you pointed out,
>>some gov't agency is already using it...
>
> Read the book 'Spycatcher' - they were doing it with manual
> typewriters years ago when they were state of the art.

Who is the author?

>
> --
> Jim Watt
> http://www.gibnet.com

Imhotep

Brett Michaels From Poison wrote:

> Theres something thats always intriguing and entertaining about
> espionage..especially now in the tech age, where basically anyone can
> invent new measures virtually..but as fascinating that is..it's also
> equally if not moreso scary. Bon voyage privacy.

Yes. I think the trend will slowly (so as not to raise too much suspicion)
errode away people's Internet privacy. I read an article the other day how
the US is sponsoring research to have better tracking on VoIP phones.

Imhotep

Imhotep

On Fri, 16 Sep 2005 20:57:30 +0200, in alt.computer.security , Jim
Watt <_way> in
<> wrote:

>On Fri, 16 Sep 2005 13:47:42 -0400, Imhotep <>
>wrote:
>
>>Brett Michaels From Poison wrote:
>>
>>> Definitely cool. I bet the Feds had this years ago though, kind of like
>>> those evm? things that pick up what you are viewing on your monitor
>>> from a good distance.
>>
>>Ya, I thought that was pretty interesting. I am sure, as you pointed out,
>>some gov't agency is already using it...
>
>Read the book 'Spycatcher' - they were doing it with manual
>typewriters years ago when they were state of the art.

Weren't they listening to the ball on the Selectric? Or was that a
different story? What is new about this, I suspect, is that they have
software that can figure things out. But I also suspect you have to be
a consistent typist. If you do a bit of work and some web sites and
then some excel it will be harder to work out the keystrokes.
"English" is only valid for one of those and then only during the
initial writing process, not the editing.

--
Matt Silberstein

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Matt Silberstein

On Fri, 16 Sep 2005 16:01:44 -0400, in alt.computer.security , Imhotep
<> in <5KGdndqNGfk1ubbeRVn-> wrote:

>Jim Watt wrote:
>
>> On Fri, 16 Sep 2005 13:47:42 -0400, Imhotep <>
>> wrote:
>>
>>>Brett Michaels From Poison wrote:
>>>
>>>> Definitely cool. I bet the Feds had this years ago though, kind of like
>>>> those evm? things that pick up what you are viewing on your monitor
>>>> from a good distance.
>>>
>>>Ya, I thought that was pretty interesting. I am sure, as you pointed out,
>>>some gov't agency is already using it...
>>
>> Read the book 'Spycatcher' - they were doing it with manual
>> typewriters years ago when they were state of the art.
>
>Who is the author?
>
Peter Wright, a British spy. The book was banned pre-publication in
Britain because he gave away "secrets". But I am pretty sure I read
about type writer stuff before that. I know they could do it with the
Selectric ball and maybe even before that. But it was quite difficult
and that was only because they had people who sat and typed all day
long. We don't have that kind of thing today (except on the Usenet).
What was significant about this was that the software could figure
things out.

--
Matt Silberstein

Do something today about the Darfur Genocide

Genocide is news | Be A Witness
http://www.beawitness.org

"Darfur: A Genocide We can Stop"
www.darfurgenocide.org

Save Darfur.org :: Violence and Suffering in Sudan's Darfur Region
http://www.savedarfur.org/

Matt Silberstein

Imhotep wrote:
> Brett Michaels From Poison wrote:
>
>
>>Definitely cool. I bet the Feds had this years ago though, kind of like
>>those evm? things that pick up what you are viewing on your monitor
>>from a good distance.
>
>
> Ya, I thought that was pretty interesting. I am sure, as you pointed out,
> some gov't agency is already using it...
>
>
> Imhotep
Actually this technique has some issues for many uses, ear (microphone)
devices can be detected far easier than devices typically used in snooping.

Winged

Winged