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What would count as 'authoritative'?

When this came up last, at https://news.ycombinator.com/item?id=11370895 , I found papers like http://all.net/ForensicsPapers/2012-12-07-OverwrittenMagneti...

> To date I have found no example of any instance in which digital data recorded on a hard disk drive and subsequently overwritten was recovered from such a drive since 1985, when about 15% of the overwritten data was claimed to have been recovered from an modified frequency modulation (MFM) disk drive.

This in turn cites "Overwriting Hard Drive Data: The Great Wiping Controversy" - http://www.vidarholen.net/~vidar/overwriting_hard_drive_data... .

There is even more at http://skeptics.stackexchange.com/questions/13674/is-it-poss... .


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