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The difference between bitwiping and deleting a file.

 
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hezahonker
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Joined: 27 Feb 2006
Posts: 14
Location: Connecticut

PostPosted: Mon Jul 10, 2006 6:24 am    Post subject: The difference between bitwiping and deleting a file. Reply with quote

Can you please tell me the difference between these two? To the novice it would seem that bitwiping is indicating that deleting files is simply not enough. Does this imply that we can't rely on deletion as a complete elimination tool? Furthermore, would this also imply that hard resetting a device before selling it would also be unacceptable for ensuring a device is truly clean?

What tools are available to forensic specialists that enable them to recover items and to what magnatitude should the end user be aware of these techniqes so that his or her mobile device is secure?
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air1
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Joined: 26 Feb 2003
Posts: 62

PostPosted: Mon Jul 10, 2006 6:52 am    Post subject: Reply with quote

Sounds like a great topic for a research paper Smile
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hezahonker
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Joined: 27 Feb 2006
Posts: 14
Location: Connecticut

PostPosted: Mon Jul 10, 2006 6:55 am    Post subject: Reply with quote

Laughing Laughing Laughing Laughing

Well, I cooked my goose there didn't I?
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hezahonker
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Joined: 27 Feb 2006
Posts: 14
Location: Connecticut

PostPosted: Fri Oct 13, 2006 10:55 am    Post subject: Reply with quote

Well, now that I have read up on this I can answer myself. I see this thread has a lot of curious eyes.

Shredding is very different from deleting. One think that really amazed me was that when a file is deleted, it is simply reallocated so that space on the drive is freed. The file itself can continue to exist until it is overwritten. That means some mean old forensics dude can come along and steal your device, and pluck sensitive data with his tools if they are not completely gone.

Shredding takes another approach. It takes the data bits and basically scrambles them up like a pan full of eggs. Your data is made up of 1s or 0s so it simply keep writting over or "Passing" until the data is no longer identifiable.

So folks, don't delete stuff that is sensitive. Shred it!
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