Risk considers the asset's worth, the risks or hazards that may influence it, and the asset's vulnerability to the danger or security risk rating. We can give values to the three risk components during the risk analysis process to generate an overall risk assessment. The higher the risk score, the greater the potential loss. Asset vulnerability refers to the degree to which an asset is susceptible to damage or loss. An asset that is well protected from hazard exposure will usually have a lower risk score than one that is not. For example, if a car has good safety features such as air bags and seat belts, it has less risk than one that doesn't have these protections. If computers were made out of glass they would be vulnerable to breakage but because they are manufactured with plastic they are considered durable assets that are resistant to damage. Assets can also be vulnerable due to their location. For example, buildings can collapse due to damage caused by earthquakes or hurricanes. Storage tanks can leak petroleum products that can cause soil and water contamination. Ships can sink after being hit by large objects such as whales. The effectiveness of protection programs can also affect asset vulnerability. For example, if a company does not have any insurance to cover losses from environmental contamination then it is vulnerable to such risks. Finally, assets can be vulnerable due to poor maintenance practices.