Secure Deletion of Data from Magnetic and Solid-State MemoryPeter 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. It is published under the Creative Commons license. This paper is now more than twenty years old and discusses disk storage technology that was current 20-25 years ago. For an update
