There are two methods of erasing a file. The first one is the old simple method that offers software protection and the second one complies with C-4 protocol and offers both software and hardware protection which means that the original source may not be retrieved by using extra hardware equipment to read the magnetic surface of the hdd. Note that the second method is 4 times slower than the first method but it is also the most reliable method world wide.
This version 3.0 of Shredder, eliminates the possibility to obtain information about file's length or version numbers and provides a better interface. After deleting a file, Hackman is forced to close the file.
There is a configuration dialog box added under Hackman's configurations menu. In this dialog box there are three settings. The first one determines the erase method and the second one forces shredder to ignore if file is read-only or not. Leave this check-box unchecked if you wish to be protected by the read-only attribute.