Henry is the risk manager for Atwood Landing, a resort community in the midwestern United States. The resort’s main data centre is located in northern Indiana in an area that is prone to tornados. Henry recently undertook a replacement cost analysis and deter- mined that rebuilding and reconfiguring the data centre would cost $10 million.
Henry consulted with tornado experts, data centre specialists, and structural engineers. Together, they determined that a typical tornado would cause approximately $5 million of damage to the facility. The meteorologists determined that Atwood’s facility lies in an area where they are likely to experience a tornado once every 200 years.
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The exposure factor is the percentage of the facility that risk managers expect will be damaged if a risk materialises. It is calculated by dividing the amount of damage by the asset value. In this case, that is $5 million in damage divided by the $10 million facility value, or 50%.
(ISC)2 CISSP Certified Information Systems Security Professional Official questions and answers.