Shred File/Folder
In this screen you can completely remove sensitive data from your hard drive so they
cannot be recovered or undeleted.
When you delete a file, it isn't actually removed.
Contents of the deleted file continue to be stored on the disk, until something else overwrites the space it
occupied, and can be easily recovered using any un-erasing utility.
All In One Computer Tools overwrites your data, destroying it more effectively than reformatting can do.
This is done by encrypting the selected file repeatedly and overwriting the files with redundant data,
destroying any previous data that was there before.
All In One Computer Tools writes directly to the disk by flushing the file buffers after each overwriting,
so that the data is not only in cache memory.
All In One Computer Tools used a very sophisticated shredding algorithm which compliant with the
U.S. Department of Defense's 5220.22 M standard.
This is how its done:
1) Overwrite the file contents:
The write head passes over each sector three times.
First time with zeros
Second time with ones
Third time with random characters.
2) The file size is set to zero.
3) The file name renamed to a random name.
4) The file (created, modified, and last accessed) dates are restored to what they were.
5) The file is deleted.
You may choose to repeat step #1 up to 99 times.
When you move a file into the Recycle Bin, empty the Recycle Bin or even delete the file directly
bypassing the Recycle Bin, Windows doesn’t actually delete the file.
The file remains on your hard disk.
Windows just removes its entry from the FAT (File Allocation Table) for not recognizing
the file as being present anymore.
Yet the information hasn't really been erased and the file can be easily recovered using any un-erasing utility as it
hasn't been overwritten by new data yet.
Caution: Files/Folders deleted by this software cannot be recovered by any third un-erasing software.
Overwrite each file X times:
Here you choose how many times to repeat the deletion operation (step #1 that described above).
The greater the number of passes, the longer the execution time will be.
How many times?
Almost if not all the information on the disk will be destroyed even after a 1 pass.
With a second and third pass chances become very low that even one character can be recovered.