> The package manager approach is interesting in that it marks 'trusted',
quoted text
> and is thus permissive rather than restrictive. Maybe it would be possible
> to extend on this and simply define a set of currently unprivileged access
> as privileged for untrusted applications. That way you could allow
> untrusted software to run without risk, even if that untrusted software
> turns out to be malware. That is, it may be possible to solve the malware
> problem in a much more fundamental way here by just allowing malware to
> run without the need to know if it is malware, just by running untrusted
> software with reduced privileges.
> 

Its called SELinux and SELinux can already do this sort of stuff,
including things like "only rpm may create files you are permitted to
execute"
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