[ga] Cyberspace Security and the Root(s)

[DannyYounger@cs.com]

In reading the recently published "National Strategy to Secure Cyberspace", 
my attention was drawn to one particular remark:

"To combat these vulnerabilities, the security of the infrastructure must not 
be dependent on a single layer, group or focal point, but rather must be 
found in multiple layers, distributed defenses, and the ability to recover 
quickly from any attack."
http://www.whitehouse.gov/pcipb/cyberstrategy-draft.pdf

Doesn't this seem to argue against the concept of the desirability of a 
single root?  From strictly a security perspective, can someone sufficiently 
knowledgable advise as to which is better -- having a single root or having 
multiple roots?  
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