the data still physically resides on the disk. There are low level tools that can extract data that has been formatted
by Windows. Experiments have shown that PC owners and organizations consistently leave data on drives that are
recycled or disposed of. Sometimes the data is of very confidential matter.
If those drives get in the wrong hands, it could be trouble.....
Are we doing enough?
Residual data
Data removal recommendations  (Brown University)
Data removal recommendations  (Penn State University)
Data removal guidelines  (Internet2 Wiki)
Dept of Defense Standards (DoD)
Standard DoD 5220.22-M
NIST guidelines
SANS White Paper  (SANS Reading Room)
GIAC White Paper
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Residual data
Data removal recommendations  (Brown University)
Data removal recommendations  (Penn State University)
Data removal guidelines  (Internet2 Wiki)
Dept of Defense Standards (DoD)
Standard DoD 5220.22-M
NIST guidelines
SANS White Paper  (SANS Reading Room)
GIAC White Paper
Darik’s Boot ‘n Nuke
Home PageFree Download
Review   (Download.com)
FAQ
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File Shredder
Home PageFree Download
Review  (opening ad?)
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Active @ KillDisk
Home PageFree Download
Review   (Download.com)
Review   (SnapFiles)