Hardwipe is the free data sanitization toolset used by activists, journalists, IT technicians and anyone needing to ensure that discarded, but sensitive, information can never be recovered by someone else.
Use Hardwipe to permanently erase (or "hard wipe") data on disk and portable storage media.
Hardwipe for Desktop provides a slick user interface with optional support for "right-click" context menus in Windows File Explorer. It can conveniently destroy files and folder contents on-demand, erase drives and USB media, and sanitize the Windows Recycler.
Hardwipe for Desktop is free for non-commercial use.
The Hardwipe Portable Edition provides a USB runnable alternative which can easily be combined with Windows PE to create a modern boot and nuke data sanitization solution with a graphical user interface.
Finally, Hardwipe's command line utility can easily be automated from the Windows Task Scheduler in order to prevent remnant data accumulation, offers total flexibility for power users.
Hardwipe gives you the freedom to securely erase:
Remanence, the Hardwipe movie.
New York Times, January 2015