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February 22nd, 2002, 03:50 PM
#11
I have to agree with RA, they can get everything you have on there....unless you physically slice and dice your HD! And even then who knows....
Also, just FYI for those who don't know, they copy your HD onto a new one, and then **** with it!
- Jimmy Mac
Replicants are like any technology, if there not a hazard, its not my problem....
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February 22nd, 2002, 04:11 PM
#12
The last test I heard, the NSA had found a way to read information from sectors that had been rewritten to something like 10 times. If they are admitting this, then they can probably go back 12 to 15 times. You can get programs off the internet to completely erase files (even pgp has a wipe utility) that overwrite a deleted file anywhere from 1 to 24 times.
\"Ignorance is bliss....
but only for your enemy\"
-- souleman
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February 22nd, 2002, 04:16 PM
#13
Member
okay. . .that's kinda scarey, but I'm not surprised. . , everything leaves an electromag residual.
and yes, though you can dice your HDD, they can peice together almost anything there. . .it's kinda scary. . .ressurecting the dead. . .
(I've done it with broken CDs, just to see if it worked. . .i got *some* data)
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February 22nd, 2002, 04:17 PM
#14
Member
for a *REALLY* secure wipe, I would say 15000 degrees should do just fine. . .
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February 22nd, 2002, 04:34 PM
#15
Senior Member
I agree...15000 is probably about right
SlackWare my first, Debian my second....building my box into the ultimate weapon
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February 22nd, 2002, 04:57 PM
#16
this is an article from 1995..."they've" been doing it a long time...at least over written up to 9 times...article seems to say that 10 is the magic number...
http://www.wired.com/wired/archive/3.10/data_pr.html
i remember hearing a rumbling a month or so ago about a new data recovery technique using scanning electrons...can't remember now and couldn't google it...
for most cases a good shredder is enough
i've use supershredder from analogx ..it's free
I've also been using sure delete...it's also free and is customizable with 3 levels of security..plus it's drag and drop and you can do single files or whole drives...
to be absolutely sure...i'd encrypt you whole drive then shred it ...then if "they" do recover it...they also have to decrypt...then do a hard drive polish...(do a search for defraggling in the archives...if ya haven't seen how to defraggle...you just have to... )
I used to be With IT. But then they changed what IT was. Now what I'm with isn't IT, and what's IT seems scary and weird." - Abe Simpson
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February 22nd, 2002, 05:29 PM
#17
Junior Member
i would use a shredder 200 times, than u can be sure that it´s really down
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February 22nd, 2002, 05:57 PM
#18
Junior Member
I read about a program that you can use that basically destroys your whole computer's data with a single words entry is that true?
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February 22nd, 2002, 06:21 PM
#19
that's what these "shredder" progs do...they repeatedly overwrite the file.
basics
files are magnetically written to disk using 1's and 0's
when you delete a file in windows/dos it doesn't delete it...it just marks the physical space the file is occupying as free. it can remain there in it's entirety until something else writes over it
problems in terms of security
files stick around until they are overwritten even when they are deleted from recycle
files are not stored in contiguous chunks...a single file can be stored in many different phsyical parts of a disk (that's why we defrag...) so even if part of the file is over written, parts might not be and some data may be exposed.
because we are dealing with magnetism, there is a residual background "noise" that can be read by sensitive equipment and data recovered..even after being overwritten several times.
the shredder programs work on various schemes by writing patterns overtop of the full phsyical space taken up by a file..the more times the disk/file is written over, the less likely the chance that it can be recovered...
I used to be With IT. But then they changed what IT was. Now what I'm with isn't IT, and what's IT seems scary and weird." - Abe Simpson
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February 22nd, 2002, 06:26 PM
#20
Originally posted here by jcmcb
Also, just FYI for those who don't know, they copy your HD onto a new one, and then **** with it!
Yep...
Keep it forever as evidence too.
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