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Old 11-21-2010, 06:09 AM   #16
H_TeXMeX_H
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Quote:
Originally Posted by cepheus11 View Post
Are they really that paranoid? Imagine some computer newbie bought a disk via eBay, and the former owner had wiped it. The new owner did not partition and format it yet. Guilty until proven innocent?
Yeah, that's the way it works in these cases, guilty unless you have a very good lawyer.
 
Old 11-21-2010, 06:32 AM   #17
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Been that way for years.
Don't take anything secret (corporate or otherwise) into America. Read this (old).
 
Old 11-21-2010, 06:51 AM   #18
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I occasionally have to send information to lawyers in the US on CD.

These are encrypted and then sent via UPS, but the encryption key is always given seperately (either over the phone or via email)

So far I have had no issues...
 
Old 11-21-2010, 07:19 AM   #19
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Either way it's a very good idea to keep everything encrypted, except mundane things. Really, just keep everything encrypted to be safe. However, they have been known to force people to give the encryption key, and if they suspected that something was on the drive, you are guilty if you don't give the encryption key ... and if you don't as well. Welcome to the USSA.
 
Old 11-21-2010, 01:36 PM   #20
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If you use strong encryption+steganography with a very high signal to noise ratio, using high resolution jpeg formats or mpg4 as data supports... there is NO WAY the "professional snoops" will try to bother you...

Is it a crime to have some pics or muvz...?
 
Old 11-21-2010, 01:49 PM   #21
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Immagine I carry in my disk a series of Jpegz with the blueprints of an experimental Hypersonic Cruise missile developed in Argonne Labs, corrupted by "noise" which is in fact the encryption of the blueprints of a Nuke warhead.

The dudes won't see the pics of the nuke warhead... so they let me go ... Lulllzzzz...
 
Old 11-21-2010, 02:16 PM   #22
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Technically encrypted videos and pics look like random data, and you can claim that it is just that. Don't know if it will work, but it should.
 
Old 11-21-2010, 02:48 PM   #23
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Quote:
Originally Posted by H_TeXMeX_H View Post
Technically encrypted videos and pics look like random data, and you can claim that it is just that. Don't know if it will work, but it should.
Why would anyone have a bunch of files containing random data on their drives? Seems like it would be a bit suspicious.
 
Old 11-21-2010, 03:06 PM   #24
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Quote:
Originally Posted by MTK358 View Post
Why would anyone have a bunch of files containing random data on their drives? Seems like it would be a bit suspicious.
The idea is superpose pseudo-random data from encryption over innocent meaningful data as if it was noise...

http://en.wikipedia.org/wiki/Steganography

Last edited by Alexvader; 11-21-2010 at 03:07 PM.
 
Old 11-22-2010, 04:39 AM   #25
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Quote:
Originally Posted by MTK358 View Post
Why would anyone have a bunch of files containing random data on their drives? Seems like it would be a bit suspicious.
Well, they could be maybe a .bin and .cue being stored, or maybe I lost the .cue. Maybe they're just random seeds. I know there's a site called hotbits where you can download random data taken from nuclear decay ... it has applications in encryption and stuff. I could always say it is corrupt data, and I'm trying to recover it.
 
Old 11-22-2010, 06:11 AM   #26
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Quote:
I know there's a site called hotbits where you can download random data taken from nuclear decay
random.org is another one; they use atmospheric noise (although one could argue that this isn't adequately "random", but I'm not gonna start up another determinism debate here...I'm done with that $#!t for now ).
 
Old 12-03-2010, 10:13 AM   #27
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Quote:
Originally Posted by MTK358 View Post
Why would anyone have a bunch of files containing random data on their drives? Seems like it would be a bit suspicious.
This reminds me of the argument a fascist co-worker gave me once. He said he didn't believe police should be required to have warrants to enter your home. His theory was if you're not doing anything illegal you have no reason to prevent them walking in any time they want. I pointed out that taking a dump isn't illegal but I don't want anyone walking in on me while I do it.
 
Old 12-03-2010, 10:27 AM   #28
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Quote:
Originally Posted by MensaWater View Post
This reminds me of the argument a fascist co-worker gave me once. He said he didn't believe police should be required to have warrants to enter your home. His theory was if you're not doing anything illegal you have no reason to prevent them walking in any time they want. I pointed out that taking a dump isn't illegal but I don't want anyone walking in on me while I do it.
If this is so, then I should have the right to walk in on the cop any time I want, just to make sure he isn't doing anything illegal either. Some goes for bankers and politicians ... I can come by anytime and make sure they aren't embezzling.
 
Old 12-04-2010, 06:26 AM   #29
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Boot from live system and do not attempt to mount / access the drive. This way you wont have any of its contents in RAM (and in /dev/urandom as result) so that data cannot be written back to it while overwriting with random data

shred /dev/hda
badblocks -wvvf /dev/hda

overwrites 3 times with random data, tests for bad blocks and gives you a report on the drive's condition (overwriting it some more), and leaves it full of zeroes perfect for further use
 
Old 12-05-2010, 05:44 AM   #30
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randomly in my new job this has been one of the first tasks I've been doing.

So far I've dug out 24x250gb sata drives which need formatting >_< Got 2x usb caddys going with shred, plus I built another system and got shred running on another 4 within that booting off a ubuntu usb key.

Its taking awhile
 
  


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