
Free space bleaching
Deleting an asset in Windows does not completely remove the contents of the asset from your hard
drive. Windows only deletes the reference to the asset. The content of the asset still remains on the
hard drive until another asset overwrites that same area on the hard drive with new information.
Free space bleaching allows you to securely write random data over deleted assets, preventing users
from viewing the original contents of the deleted asset.
NOTE: Free space bleaching can be performed occasionally for assets that you delete by selecting
Simple Delete Settings in File Sanitizer, by moving the assets to the Windows Recycle Bin, or by
deleting the assets manually. Free space bleaching provides no additional security to shredded
assets.
You can set an automatic free space bleaching schedule, or you can manually activate free space
bleaching using the HP ProtectTools icon in the notification area, at the far right of the taskbar. For
more information, refer to
Setting a free space bleaching schedule on page 72 or Manually
activating free space bleaching on page 78.
70 Chapter 7 File Sanitizer for HP ProtectTools
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