Can you pick up data from a computer without its cover on? I read a post from someone about windowed cases allowing all your data to be radiated out, including say.... your banking info.

--
Any sufficiently advanced technology is indistinguishable from magic -- Arthur C Clarke

"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Back in the 70's when I was contracting at Eglin AFB, we were audited
by a branch of a non-disclosed government security agency. They were
trying to see whether or not they could detect data going through a
cable (1.5 inches in diameter) that connected a large disk file to a
CDC 6600 mainframe. We were surprised to learn they could detect the
movement of data (whether data or control, we don't know) through the
cable, but were unable to actually interpret the data as there were
streams of data being sent and received by more than 40 different
programs multiprogramming at one time. They never tried to detect and
interpret a stream for a single progam. And we didn't think they would
be able to do so, as there are both control ad dta signals running thru
the cable simultaneously.

SO I think you are safe unless someone knows something that I don't.

On Tue, 10 Feb 2015 20:56:50 -0000, John Carter wrote:

"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Back in the 70's when I was contracting at Eglin AFB, we were audited
by a branch of a non-disclosed government security agency. They were
trying to see whether or not they could detect data going through a
cable (1.5 inches in diameter) that connected a large disk file to a
CDC 6600 mainframe. We were surprised to learn they could detect the
movement of data (whether data or control, we don't know) through the
cable, but were unable to actually interpret the data as there were
streams of data being sent and received by more than 40 different
programs multiprogramming at one time. They never tried to detect and
interpret a stream for a single progam. And we didn't think they would
be able to do so, as there are both control ad dta signals running thru
the cable simultaneously.

SO I think you are safe unless someone knows something that I don't.

Surely if they could pick up everything going through the cable, they could separate out one communication? After all, whatever you had terminating the cable must have done so.

--
On a Continental Flight with a very "senior" flight attendant crew, the pilot said,
"Ladies and gentlemen, we've reached cruising altitude and will be turning down the cabin lights.
This is for your comfort, and to enhance the appearance of your flight attendants."

"Tough Guy no. 1265" wrote in
news
On Tue, 10 Feb 2015 20:56:50 -0000, John Carter
wrote:

"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I
read a post from someone about windowed cases allowing all your
data to be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Back in the 70's when I was contracting at Eglin AFB, we were
audited by a branch of a non-disclosed government security
agency. They were trying to see whether or not they could detect
data going through a cable (1.5 inches in diameter) that
connected a large disk file to a CDC 6600 mainframe. We were
surprised to learn they could detect the movement of data
(whether data or control, we don't know) through the cable, but
were unable to actually interpret the data as there were streams
of data being sent and received by more than 40 different
programs multiprogramming at one time. They never tried to
detect and interpret a stream for a single progam. And we didn't
think they would be able to do so, as there are both control ad
dta signals running thru the cable simultaneously.

SO I think you are safe unless someone knows something that I
don't.

Surely if they could pick up everything going through the cable,
they could separate out one communication? After all, whatever
you had terminating the cable must have done so.


The cable was composed of many individual wires (I'm a bit out of my
element here - my background is real-time computing -software) the
exact number I can't tell you, but there were data wires and control
wires all of which had a ground and they were all wound around each
other and treminated in a multi-connector plug. To have a detector
be able to discern which of those wires is control and which is data
would be IMO impossible. It may be possible now, but in 1972?

If they were collecting the signals at the same time there was a
single program running and they knew what the program was doing wrt
disk activity, then a "post mortem" analysis could possibly
determine specifics. But spying activity doesn't happen that way.
This system was a Control Data 6600 that was made up of a CPU and 10
independently programmed Peripheral Processors (PPU). This
architecture which was designed by Seymore Cray before he left to
form his own company, and this CPU had NO I/O capability. All I/O
was done by one of the 10 PPUs. The PPUs had access to a crossbar
of 12 data channels that connected to Disk, Tape, nit record
devices. The design of the operating system was such that all disk
I/O went thru a single PPU. With 40 or more user programs running
and using mass storage, the PPU driving the disk was constantly
moving data to and from the disk. In addition the PPU in charge of
the disk I/O also did head movement optimization, prioritizing
queued disk requests inorder of nearest head/track. On a good mix
of programs, I have seen the disk heads (12 platters) do noting but
smoothly move from outer track to inner track and then back, over
and over.

Sorry for the treatise, but with all that differing streams of data,
that just does nothing but complicate the task of translating the
data into useful information.

The audit team finally gave up on our system and decided to audit
some other mainframes there. They audited an IBM 360/65 running
OS/MFT and a Burroughs B3500. They gave everyone an exit briefing
and declared the CDC 6600 the only system inthe computer center that
should be runing classified data. We learned later that they
audited the CDC systems at Edwards AFB, Kirtland AFB, Wright-
Patterson AFB and Cambridge Research Lab all if which were Air Force
Systems COmmand installations with the same results.

"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal flyback
pulses from an old CRT display, if it can also grab the RGB video radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd only get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band II FM
reception, but I seriously doubt any intelligence could be filtered from
that mess of basically RF noise.

On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal flyback
pulses from an old CRT display, if it can also grab the RGB video radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd only get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band II FM
reception, but I seriously doubt any intelligence could be filtered from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help to stop people listening in? It's meant to be for stability I think.

--
I came real close to seeing Elvis, then my shovel broke.

"Tough Guy no. 1265" wrote in message
news
On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band II FM
reception, but I seriously doubt any intelligence could be filtered from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field wrote:


"Tough Guy no. 1265" wrote in message
news
On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band II FM
reception, but I seriously doubt any intelligence could be filtered from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or off..

--
While most Americans believe that getting rid of religion is an impossible goal, much of the developed world has already accomplished it. Any account of a €�god gene€œ that causes the majority of Americans to helplessly organize their lives around ancient works of religious fiction must explain why so many inhabitants of other First World societies apparently lack such a gene. The level of atheism throughout the rest of the developed world refutes any argument that religion is somehow a moral necessity. Countries like Norway, Iceland, Australia, Canada, Sweden, Switzerland, Belgium, Japan, the Netherlands, Denmark and the United Kingdom are among the least religious societies on Earth. According to the United Nations Human Development Report (2005) they are also the healthiest, as indicated by measures of life expectancy, adult literacy, per capita income, educational attainment, gender equality, homicide rate and infant mortality. Conversely, the 50 nations now ranked lowest in
terms of human development are unwaveringly religious.
--Sam Harris (An Atheist Manifesto)

"Tough Guy no. 1265" wrote in message
news
On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news
On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd
only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band II
FM
reception, but I seriously doubt any intelligence could be filtered
from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help
to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or off.

Does the user manual bother to mention what spectrum it spreads?

On Wed, 24 Jun 2015 20:15:36 +0100, Ian Field wrote:


"Tough Guy no. 1265" wrote in message
news
On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd
only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band II
FM
reception, but I seriously doubt any intelligence could be filtered
from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help
to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or off.

Does the user manual bother to mention what spectrum it spreads?

Yes, I think it's the CPU clock. And it's to do with less interference with other components in the system.

--
Women claim that they never pursue a man. Well, by the same token, a mousetrap never pursues a mouse, but the end result is
the same.

"Tough Guy no. 1265" wrote in message
news
On Wed, 24 Jun 2015 20:15:36 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news
On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd
only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band
II
FM
reception, but I seriously doubt any intelligence could be filtered
from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help
to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or
off.

Does the user manual bother to mention what spectrum it spreads?

Yes, I think it's the CPU clock. And it's to do with less interference
with other components in the system.

Find out which is the DMA chip and give it its very own little pointy
tinfoil hat.

On Sun, 28 Jun 2015 21:29:24 +0100, Ian Field wrote:


"Tough Guy no. 1265" wrote in message
news
On Wed, 24 Jun 2015 20:15:36 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I read
a post from someone about windowed cases allowing all your data to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd
only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band
II
FM
reception, but I seriously doubt any intelligence could be filtered
from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could help
to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or
off.

Does the user manual bother to mention what spectrum it spreads?

Yes, I think it's the CPU clock. And it's to do with less interference
with other components in the system.

Find out which is the DMA chip and give it its very own little pointy
tinfoil hat.

I can see that dislodging and being as successfull as my home made water cooling system.

--
We are with Europe, but not of it. We are linked, but not compromised. We are associated, but not absorbed.
And should a European statesman address us and say "Shall we speak for thee?", we should reply "nay sir, for we dwell among our own people".
-- Winston Churchill 1953

"Tough Guy no. 1265" wrote in message
news
On Sun, 28 Jun 2015 21:29:24 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news
On Wed, 24 Jun 2015 20:15:36 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I
read
a post from someone about windowed cases allowing all your data
to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so they'd
only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out band
II
FM
reception, but I seriously doubt any intelligence could be filtered
from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could
help
to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or
off.

Does the user manual bother to mention what spectrum it spreads?

Yes, I think it's the CPU clock. And it's to do with less interference
with other components in the system.

Find out which is the DMA chip and give it its very own little pointy
tinfoil hat.

I can see that dislodging and being as successfull as my home made water
cooling system.

prick

"Mick" wrote in message
...

"Tough Guy no. 1265" wrote in message
news
On Sun, 28 Jun 2015 21:29:24 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Wed, 24 Jun 2015 20:15:36 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:43:40 +0100, Ian Field
wrote:


"Tough Guy no. 1265" wrote in message
news On Mon, 22 Jun 2015 20:26:34 +0100, Ian Field
wrote:


"John Carter" wrote in message
...
"Tough Guy no. 1265" wrote in
news
Can you pick up data from a computer without its cover on? I
read
a post from someone about windowed cases allowing all your data
to
be radiated out, including say.... your banking info.


NO

Unless you have a very sophisticated sniffer.

Apparently some sniffers can be synchronised to radiated
horizontal
flyback
pulses from an old CRT display, if it can also grab the RGB video
radiated
energy it can theoretically resolve what's being displayed.

There's no way to identify which emissions are R, G or B, so
they'd
only
get
a B&W image - if you're viewing bank details or top secret design
schematics, its possible it could be captured.

The logic level switching hash from an uncased PC can blot out
band
II
FM
reception, but I seriously doubt any intelligence could be
filtered
from
that mess of basically RF noise.

Perhaps the setting in the BIOS to widen the frequency band could
help
to
stop people listening in? It's meant to be for stability I think.

And which BIOS settings would those be then?

"Spread spectrum". I've never noticed a difference turning it on or
off.

Does the user manual bother to mention what spectrum it spreads?

Yes, I think it's the CPU clock. And it's to do with less interference
with other components in the system.

Find out which is the DMA chip and give it its very own little pointy
tinfoil hat.

I can see that dislodging and being as successfull as my home made water
cooling system.

prick

The boffins in the Elektor labs tried oil cooling a hard drive by total
immersion.

Last I heard - the experiment wasn't a resounding success.