Alexandr
Joined: 07 Aug 2007
Posts: 2
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| Posted: Thu Aug 09, 2007 7:30 pm Post subject: Is it safe not to use file shredder? |
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Quote: :?: I have an application that does not delete a file but simply overwrites the file (which has old data) with new data whenever it is run. So what are the chances of recovering data which has been overwritten every time(the length of the data overwritten may vary) ?
Will QuickWiper work efficiently even in this case?
And also will it be able to erase the history of such file operations?
How can the overwritten data be recovered back?
I feel whenever we overwrite a file with new contents, the old contents do get overwritten right (because of same memory location)?
:!: In case if non-specialized program overwrites own files there's of course a chance to recover overwritten information because in such case old information is not deleted physically on your hard disk drive so information can be recovered.
When you (or any program) delete a file the file data is not deleted. Instead, Windows changes the file's directory entry to indicate the space occupied by this file is no longer needed and is available for use. The data's still there, but at any time if the operating system needs space for another file, it may be overwritten. Until it is overwritten, the file still exists on the hard disk and is recoverable.
If on your hard disk drive are sectors with free space (for example you just deleted some information) most probably a new version of file will be written there. So there will be several versions of these file - visible and invisible for you. Invisible or deleted file can be recovered if it wasn't completely deleted or overwritten.
So if you have any secure information it's strongly recommended to use specialized file shredder to make deletion secure and prevent information leakages.
I recommend you to use specialized file shredder like a QuickWiper or our new solution Shred Agent to make deletion secure and prevents information leakages. |
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