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Date: Thu, 17 Jul 2008 16:38:46 +0200
From: "Die Gestalt" <die.gestalt@gmail.com>
To: "Liste FreeBSD-security" <freebsd-security@freebsd.org>
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References: <f383264b0807161710m285ed915m8ea9d088fbe83df9@mail.gmail.com>
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Subject: Re: A new kind of security needed
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It's the concept behind Microsoft's experimental OS : Symphony...

Otherwise you can use jail.