| From: Niall O Broin <niall at linux.ie>
| Date: Fri, 8 Jul 2005 15:51:37 +0100
| On 8 Jul 2005, at 15:35, Niall Walsh wrote:
| > awful lot of work to make all data on a drive unrecoverable (afair US
| > military emergency destruction involves acid while regular destruction
| > obliterates the drives by explosion).
| A member of this list gets his company's old drives cut in two with an
| angle grinder. I'd say that's a pretty reliable means of destroying data.
depends on how damaging it could be if part or
all of the data were stolen; or perhaps more
accurately, how valuable it would be to whomever
gains possession. this also applies to past
data, since wiping a drive isn't that effective
(if, that is, the villain is willing to pay for
the effort needed to read the residual traces).
I cannot recall all the details now, but c.1990
I read a RAND(?) study on data destruction.
in addition to how ineffectual wiping is, the
other point I very distinctly remember was the
recommendation that the most effective practical
method is to incinerate the shredded platters in
a secured facility. at that time, I was under
the impression that that was USA DoD (military)
policy for any drive that had ever contained
Secret or Top Secret data. however, that clearly
isn't emergency policy, where explosion or acid
could indeed be the plan (I have no idea).
for the less exotic concerns of this list, physical
destruction of the platters — even just cutting
them in half — ought to be sufficient in most cases;
and if it is not, then after we tell you what we do,
we'll have to kill you .... ;-)
Experienced (20+ yrs) kernel/software Eng: | Brian Foster Montpellier,
• Unix, embedded, &tc; • Linux; • doc; | blf at utvinternet.ie FRANCE
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