[30960] in cryptography@c2.net mail archive
Re: Interesting bit of a quote
daemon@ATHENA.MIT.EDU (David Mercer)
Fri Jul 14 09:49:40 2006
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
Date: Thu, 13 Jul 2006 22:49:23 -0700
From: "David Mercer" <radix42@gmail.com>
To: cryptography@metzdowd.com
In-Reply-To: <Pine.SOL.4.61.0607131125150.15505@mental>
On 7/13/06, leichter_jerrold@emc.com <leichter_jerrold@emc.com> wrote:
> Phenomenon 1:
> Computerized records are malleable, and it's in general impossible
> to
> determine if someone has changed them, when they changed them, what
> the previous value was, and so on. Further, changing computer
> records
> scales easily - it costs about as much to change a million records
> as
> it does to change one record.
Well yes, and no. Relational database systems preform replication by
copying and loading trasaction logs, and WORM drives (and WORM tapes)
are used by organizations that need to prove that things weren't
altered (or to be able to audit when they are). It is of course quite
a lot more expensive to do things that way compared to how the typical
IT shop does things.
-David Mercer
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