To be sure that nobody can restore your files and get access to the private information which you wish to be destroyed for ever, it is necessary to use the Safe File Shredder. The shredder program work as follows:

File content becomes filled by special data array. i.e. the place on a disk which was occupied earlier became filled with other data (casual sequence of numbers). Thus, having overwritten its content with another one, you really destroy its presence. There are ways to restore the information and after such procedures, but they demand the special equipment which allows to fix is insignificant small level residual magnetization of a hard disk surface. It demands the big expenses which are expedient only if you stored plans of a super new aircraft.
But Safe File Shredder takes steps to exclude such possibility also: In addition, the program undertakes special steps to be assured that data will not be restored by residual level of a magnetic dust. After these manipulations program marks a data as deleted on the file system level and the place on a storage device becomes available for further use. In addition it can hide the folders and files names for restoring programs.
Other shredding programs use various algorithms. Basically they differ of passes quantity and types of data which placed in a space of deleted data and for some reasons it is enough. But the Safe File Shredder makes the protection even more inconvenient.

The resume of given article obviously enough. If you want, that traces of the deleted information have been carefully wiped, and the information remained only your property, you should take advantage with Safe File Shredder use. When it is a question of confidentiality, reliability and safety financial questions fade into the background.