-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 09/02/16 08:28, Sorin Srbu wrote: >> -----Original Message----- From: centos-bounces at centos.org >> [mailto:centos-bounces at centos.org] On Behalf Of EGO-II.1 Sent: >> den 9 februari 2016 09:00 To: CentOS mailing list Subject: Re: >> [CentOS] Utility to zero unused blocks on disk >> >> >> >>>> the only truly safe way to destroy data on magnetic media is >>>> to grind the media up into filings or melt it down in a >>>> furnace. >>> I unscrew the casing, extract the disk platter(s), slide a very >>> strong magnet over both sides of the platter surface then bend >>> the platter in half. >>> >>> How secure is that ? >>> >>> I can't afford a machine that grinds everything into dust >>> particles. >> I have seen a guy in the I.T. department where I work take a >> hard drive....remove as many stickers from it (to make it porous >> as possible) and then soak it in a "brine" of ammonia, hydrogen >> peroxide, bleach, and salted water...for like a week or two. >> Afterwards? total useless junk. > > I often find harddrives with several 10 mm drill-holes in them, in > the electronics disposal room at work. > > I'd say that'd be enough as well. 8-) > At home I just collect up any old disks, memory sticks, credit cards and anything else with storage from the family and keep them until I am burning garden rubbish. Once there is a nice orange- or yellow- hot firebed in the incinerator I throw them in. Sometimes the aluminium runs out of the bottom, all I find in the ashes is the odd bit of steel. I'd like to see the CIA read that lot! -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJWunMGAAoJEAF3yXsqtyBlyA0P/0/sY8UXnZv4X6GnEn6eM02O BHrRkBxpjyuJD7Fgy4t0xqkQCPk4fEiH3dQZ8YUWbBwO37wFaW5Yt1Q+1eP7jTMb d1cesUsjSwb3nsQNKBYJ1azVd9p0107EI58wxvs5zCrNQlpaws7Q4f7jJG0NylBB 3Z1F1+ZgLd/d6LvlZxDL+2qjS1jh3FyD+DPE/M1HgE2zh/ag0U2DzUIWVvABb/Zt PGBefjBJ/P64uuN13qgPlGfLMXfiiuTU6bxBTPuwzrtMzuIBwXQI0pgyq3z4iJ25 PA9FBw1f05GAuM54AQ4+LosKwta/dTZNJOu2TQN1SX1mfXAdT71kCBscJ3kBgVno QkHFcVYw79zW1FFHeEHG5+xzsQ4k16XhQp3GNzFYfj0+iCQaNFuCBvEL3qYK6Keh VQwA3Kll5hPJal3+0KInzomdIYraXIlaCCjlK/g3Ap7nNjaE3z8QeLtb4ujqAjx9 QV9C0VbjdiKsnQC7XkPXTWK2DNGQxwNcsXdjxgwWTLXXE+DZeL5nCajsTebYwlM7 fogL2NlSc1WBvpahvtw61TRsCB7HDTqdgiFV0GyZEXpfB6i6MJVefbC3uNpVNQ69 Q5m6hX+MmpyDAampYwDWq5AGKRf6rT3BdX3XahAae1wMOEswaw60d2wiktd6YFDm hXl7/pb2lzp7qyyPPDN/ =YvYg -----END PGP SIGNATURE-----