Eraser is an advanced security tool, which allows you
to completely remove sensitive data from your hard
drive by overwriting it several times with carefully
selected patterns. You can drag and drop files and
folders to the on-demand eraser, use the convenient
Explorer shell extension or use the integrated
scheduler to program overwriting of unused disk space
or, for example, browser cache files to happen
regularly, at night, during your lunch break, at
weekends or whenever you like. The patterns used for
overwriting are based on Peter Gutmann's paper "Secure
Deletion of Data from Magnetic and Solid-State Memory"
and they are selected to effectively remove the
magnetic remnants from the hard disk making it
impossible to recover the data. Other methods include
the one defined in the National Industrial Security
Program Operating Manual of the US Department of
Defense and overwriting with pseudo-random data. You
can also define your own overwriting methods.

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