What evidence is left after disk cleaners?

The process of user simply deleting evidence from a computer hard disk will not ensure that it has been permanently removed. It is for this reason that many will go to far greater lengths and use disk-scrubbing tools in an attempt to permanently remove information from storage media. This paper describes an experiment that was carried out to assess the effectiveness of two different disk-scrubbing tools in removing data from a computer hard drive. The results of which are discussed and conclusions made.