Just caught up on those girls being abducted....
11 August 2002, 10:31 AM
#1
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Says that Data Experts can re trace files deleted etc, find where they've being, stuff like that.
Hows is this possible?
What does a re-format do?
I know it wipes what seems to be all the data off, but does it really clear everything?
Also off the subject, Whats MS 2000 Sever? Got 2 copys saw it working on a till in spain because noticed it kept crashing
Cheers
Si
Hows is this possible?
What does a re-format do?
I know it wipes what seems to be all the data off, but does it really clear everything?
Also off the subject, Whats MS 2000 Sever? Got 2 copys saw it working on a till in spain because noticed it kept crashing
Cheers
Si
11 August 2002, 02:01 PM
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I saw some software last month that will guarantee to wipe files from your HDD and make then totall untraceable. Its the only software the the MOD have verified and it involves something like 29 delete operations on a file.
Cant remember what its called though !!
Any other delete method (even format) will still leave files traceable.
Dave
Cant remember what its called though !!
Any other delete method (even format) will still leave files traceable.
Dave
11 August 2002, 04:09 PM
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A file system contains a series of pointers to where the files actually are. In most cases a format merely removes the pointers and directory structure leaving all the data completely intact.
Recovering deleted files is a law of diminshing returns. Its very easy if no precautions have been taken. Simple software can make it quite hard. but to make it impossible is really very hard and would ususaly involve complete destruction of the disk.
Not a viable solution to cover your IE history file from the wife. "Wicked Weasel ? No dear, cant say I remember viisting there".
Deano
Recovering deleted files is a law of diminshing returns. Its very easy if no precautions have been taken. Simple software can make it quite hard. but to make it impossible is really very hard and would ususaly involve complete destruction of the disk.
Not a viable solution to cover your IE history file from the wife. "Wicked Weasel ? No dear, cant say I remember viisting there".
Deano
11 August 2002, 04:59 PM
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Windows is such a "perfect" operating system 
that it is not simply whether you fully delete (26 times) individual files, but whether other caches, "recent documents", registry entries, INI files, shortcuts and so on remain!
Sadly the days when you were actually in control of your computer and long gone. I bet even Microsoft struggle these days to know exactly what is going on.
More worrying is how you stop PC World from slipping a copy of DebbieDoesDallas.mpg onto you PC when it is in for repair, then accusing you of, er, being a Dallas tourist
mb
that it is not simply whether you fully delete (26 times) individual files, but whether other caches, "recent documents", registry entries, INI files, shortcuts and so on remain!Sadly the days when you were actually in control of your computer and long gone. I bet even Microsoft struggle these days to know exactly what is going on.
More worrying is how you stop PC World from slipping a copy of DebbieDoesDallas.mpg onto you PC when it is in for repair, then accusing you of, er, being a Dallas tourist
mb
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11 August 2002, 05:19 PM
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Two things:
A) There's an overhead that means a 1MB file needs a little bit more than that to store (because of the directory structure)
B) Hard disk manufacturers rip us off by taking the actual number of bytes the disk can store and dividing it by multiples of 1000 to give the number of 'Gigabytes' available. Your computer and I divide by 1024, the correct number, and come up with a smaller value. Used to be insignificant, but now seems like a big deal.
Cheers.
A) There's an overhead that means a 1MB file needs a little bit more than that to store (because of the directory structure)
B) Hard disk manufacturers rip us off by taking the actual number of bytes the disk can store and dividing it by multiples of 1000 to give the number of 'Gigabytes' available. Your computer and I divide by 1024, the correct number, and come up with a smaller value. Used to be insignificant, but now seems like a big deal.
Cheers.
11 August 2002, 06:50 PM
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To really wipe a disc just doing a format isn't any good. I think the industry standard it to overwrite every byte of the disc something like twelve times.
Bit of software you boot off basically writes a load of '1's onto every byte, then does again with '0's, then '1's etc, for the number of times you specify.
I think we do our disks something like seven times and it usually takes overnight to do it.
Once had a load of bumpf from a data recovery company (don't remember the name) that had a case where they were asked by a compnay to recover financial data from a couple of hard disks that were almost unrecognisable as hard disks following an intense fire (they looked like two piles of iron slag). Turns out they recovered something like 85% of the data. OK, could just be advertising, but you hear of better stories than that from the intelligence community.
Cheers
Ian
Bit of software you boot off basically writes a load of '1's onto every byte, then does again with '0's, then '1's etc, for the number of times you specify.
I think we do our disks something like seven times and it usually takes overnight to do it.
Once had a load of bumpf from a data recovery company (don't remember the name) that had a case where they were asked by a compnay to recover financial data from a couple of hard disks that were almost unrecognisable as hard disks following an intense fire (they looked like two piles of iron slag). Turns out they recovered something like 85% of the data. OK, could just be advertising, but you hear of better stories than that from the intelligence community.
Cheers
Ian
12 August 2002, 10:55 AM
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you can only ever destroy a hard disk with these useful tools
1) sledge hammer
2) Power sander
3) 95 Ron Unleaded or optmax if you only want the good stuff
4) A Match
you really do have to deface the platters to destroy the data but they cant recover it
1) sledge hammer
2) Power sander
3) 95 Ron Unleaded or optmax if you only want the good stuff
4) A Match
you really do have to deface the platters to destroy the data but they cant recover it
12 August 2002, 12:33 PM
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A fairly well known data retrieval company charge £180 to collect and analyse a disk then a further £1000 to recover the data onto a collection of CD's. So if your a little carful you are safe from the wife unless she has a couple of grand to spare.
13 August 2002, 05:02 PM
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A friend of mine (a network admin)was asked to try and recover some data from a female work mates computer.
Whilst doing so he found a few home movies that im sure she thought had been removed
Andy
Whilst doing so he found a few home movies that im sure she thought had been removed
Andy
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