Eraser – Free secure data erase tool to wipe files on your hard drive
Your first thought may be that when you ‘delete’ the file, the data is gone. Not quite, when you delete a file, the operating system does not really remove the file from the disk; it only removes the reference of the file from the file system table. The file remains on the disk until another file is created over it, and even after that, it might be possible to recover data by studying the magnetic fields on the disk platter surface.

Before the file is overwritten, anyone can easily retrieve it with a disk maintenance or an undelete utility.

In altre parole ti permette di cancellare definitivamente una cartelletta cliccando col tasto destro e scegliendo “Erase” oppure pulire tutto lo spazio libero del disco (e quindi distruggere file precedentemente cancellati).
Può essere utile averlo sempre pronto e installato. Non si sa mai cosa si deve cancellare…