Eraser is an advanced security tool that allows you to remove data from your hard drive by overwriting it several times with carefully selected patterns. Eraser Classic Portable is also available for download here.

Most people have some data that they would instead not share with others – passwords, personal information, classified documents from work, financial records, self-written poems, the list continues.

Perhaps you have saved some of this information on your computer where it is conveniently at your reach. Still, when the time comes to remove the data from your hard disk, things get a bit more complicated, and maintaining your privacy is not as simple as it may have seemed at first.

Most people assume you 'delete' a file; the data is gone. Not entirely. The operating system does not remove the disk's file when you delete a file; it only removes its reference from the file system table. The data remains on the drive until another file is created over it. 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 undelete utility.

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