This is a program for wiping deleted files in the Windows Recycle Bin by overwriting them repeatedly so that the data cannot be recovered. The program is simple to use, and works with all versions of Windows from Windows 98 to Windows 8. It is trilingual: English/German/Spanish.
The Recycle Bin is where files go to when you "delete" them — though they are not really deleted, just moved; and not even really moved, just marked as deleted.
It is well-known that when Windows "deletes" a file it does not actually destroy the contents of the file but rather simply unlinks the file from the file directory system, leaving the contents of the file in the disk sectors. This data will remain there until the operating system re-uses those sectors when writing new data. Until the old data is overwritten (and this may take months or longer) it can be recovered by programs that read disk sectors directly, such as forensic software (so called because it is used to obtain evidence in criminal investigations and also in legal discovery). If you wish to make sure that information in files containing confidential information (such as financial data, company plans, proposals, etc.) can never be recovered after deletion then you need a program such as this.
To securely delete — a.k.a. "wipe" — a file means to overwrite the data in the file many times, so that the data cannot be recovered by any means, and then to remove any reference to the file. Several overwrites (at least) are required for security, since just one may leave magnetic traces of the original data which can be detected by sensitive equipment designed to do this.