Am Sun, 12 Jul 2015 22:43:44 +0200 schrieb Volker Armin Hemmann <volkerar...@googlemail.com>:
> http://www.howtogeek.com/115573/htg-explains-why-you-only-have-to-wipe-a-disk-once-to-erase-it/ Yeah, that was linked from the Arch wiki I looked at. > http://www.vidarholen.net/~vidar/overwriting_hard_drive_data.pdf FWIW, Peter Gutmann doesn't have much good to say about that article (specifically, he wrote about the related blog article at [0] in his "Further Epilogue" at [1]). Regardless, the summary still seems to be: with modern high-density drives, there is *no* wiggle room outside for remnants of data to stick around after overwriting it, outside of some potential future method that is probably a) far enough away into the future that the data on the drive is uninteresting by then (if it ever was interesting to begin with!) and b) prohibitively expensive (at least at the start), which pushes the earliest time someone might ever look at my old hard drives even further back. This assumes that anybody is interested in developing something like that, if it's even possible. I can't help but wonder what the situation is like with tape, which still commonly used for backups. ISTR that huge densities are also the norm there, but that's about all I know. [0] https://web.archive.org/web/20090722235051/http://sansforensics.wordpress.com/2009/01/15/overwriting-hard-drive-data [1] https://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html -- Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup
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