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Logo "Dragon"-> Backtrack-> Digital Forensics->Anti-Forensics

Darik's Boot and Nuke ("DBAN") is a self-contained boot disk that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.

http://www.dban.org/

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