
89Risk Management
or maintenance). In the latter case, typically there will have been a change in some
aspects of the infrastructure, for example in the case of a bridge it could be increased
trafc, use of a new type of ice melter, different paving techniques or materials, dif-
ferent paint type, etc. Figure 4.4 summarizes the threat types and offers additional
examples.
ANALYSIS OF THREATS
As noted earlier, analysis answers the question, “How bad is it?” Regardless of the
threat under analysis, one must consider the likelihood of a threat agent exploiting
avulnerability to cause injury to an asset (risk), and the general impact of a success