Secure Deletion of Data from Magnetic and Solid-State Memory
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Secure Deletion of Data from Magnetic and Solid-State Memory
Peter Gutmann
Department of Computer Science
University of Auckland
pgut001@cs.auckland.ac.nz
This paper was first published in the Sixth USENIX Security Symposium Proceedings, San Jose, California, July 22-25, 1996
Abstract
With the use of increasingly sophisticated encryption systems, an attacker wishing to gain access to sensitive data is forced to look elsewhere for information. One avenue of attack is the recovery of supposedly erased data from magnetic media or random-access memory. This paper covers some of the methods available to recover erased data and presents schemes to make this recovery significantly more difficult.