This is an advantage when you delete a file by accident and want to recover it, but it becomes a huge threat when your confidential files, like bank statements, tax returns, etc. The problem is that you can't control when your computer will overwrite the files in question with new files. You don't see the file's name anywhere but the actual file is still on your disk and can be recovered until it's completely overwritten. When you simply delete a file, the only thing that gets removed is the file's entry. Deleting: What's the Difference?ĭon't confuse deleting a file with a shredder with hitting the Delete key or holding down Shift+Delete to bypass the Recycle Bin.
#BITDEFENDER FILE SHREDDER PROFESSIONAL#
Yes, they can if you use a one-pass algorithm and the person trying to undelete your file uses high-grade professional forensic software. So, we've just answered the question "Can shredded files be recovered". That way no recovery app will be able to restore the file in questions. That's why we suggest that you use a sophisticated shredding algorithm like Peter Gutmann's algorithm that overwrites files in 35 passes.
#BITDEFENDER FILE SHREDDER SOFTWARE#
However, professional data recovery software may be able to find pieces of the files and recreate its contents. This means that consumer-level file recovery apps can't undelete a file overwritten in one pass. Research done by several data recovery software publishers states that overwriting files in one pass is an effective method of erasing it. The more overwrite passes there are, the more securely the file is deleted.
When a file is deleted with the help of a shredding app, it's overwritten with random data or a set of predefined characters from one to several times. But the analogy with old-school paper shredders is a good one because digitally shredded files become unreadable. When we refer to digital file shredding, the actual data isn't shredded. In this article we'll explain how shredding files works, how's it different from simply deleting files, and when and what you should shred.
"Can shredder files be recovered?" is something our users ask us all the time because they're concerned that even using a file shredder to delete sensitive data is not enough.