[Nottingham] US warns nuke plants of worm threat - OS ?

[James Gibbon]

Robert Davies wrote:
 
> That unfortunately increases exposure to problems, if you network
> machines your security is only as good as the weakest link.
> 

That's not necessarily so - provided the functionality is not 
dependent on the connection.  It's common to run duplicate 
machines in a symmetric failover configuration, indeed the High 
Availability concept depends on duplication and redundancy.