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RE: [CISSP-D] Control types?

from [Kevin Stevens] Network Security [Permanent Link]
Subject: RE: [CISSP-D] Control types?
Date: Mon, 29 Nov 2004 13:45:26 -0800 (PST) 


On Mon, 29 Nov 2004, Jerry Patterson wrote:


If you work in a location that has hurricanes rarely, say once every ten
years, then the ARO would be .001, or .1%.  (Don't forget, ARO is ANNUAL
Rate of Occurrence, so something that happens less often is still
calculated, but it is less than 1%.)


Wouldn't that be .1, or 10%?

I understand what you're saying, but it doesn't seem correct to me.  Not
trying to argue, but the point of the ARO is to determine how many times
an exposure would occur, so that you can calculate the total cost.  If you
have a $100K loss happening four times a year, you need to capture that 4x
occurance, not just one instance.  Ccure's definition makes sense to me:
http://www.cccure.org/Documents/HISM/229-230.html

KeS






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