This is the software publisher's description.

Advanced security that enables you to completely remove sensitive data fromyour hard drive by overwriting it several times with carefully selectedpatterns.

Most people have some data that they would rather not share with others -passwords, personal information, classified documents from work, financialrecords, self-written poems, the list can be continued forever.

Perhaps you have saved some of this information on your computer where it isconveniently at your reach, but when the time comes to remove the data from yourhard disk, things get a bit more complicated and maintaining your privacy is notas simple as it may have seemed at first.

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 removethe file from the disk; it only removes the reference of the file from the filesystem table.

The file remains on the disk until another file is created over it, and evenafter that, it might be possible to recover data by studying the magnetic fieldson the disk platter surface.

Before the file is overwritten, anyone can easily retrieve it with a diskmaintenance or an undelete utility. Eraser makes sure that the files you want todelete and permanently erased.

Note that this is the portable version of Eraser.