Risk is understood to be the probability of triggering a particular phenomenon or event that, due to its own nature or intensity, and the vulnerability of the elements exposed, could result in harmful effects on people or property losses.
In common parlance risk is also understood to be a phenomenon, event or human activity that is likely to cause damage to persons and/or property.
Risks are often divided into the natural and the technological. The first group includes potentially dangerous processes or natural phenomena. The second group includes those caused by technological or industrial accidents, infrastructure failures or certain human activities.
In any case, in addition to the dangerous phenomenon, one must consider vulnerability as a determinant of the type and amount of damage caused. The vulnerability of a community is determined by physical and social factors, including economic, that condition its susceptibility to suffering damage as a result of a dangerous phenomenon.
Currently the concept of resilience is being used to designate the capacity of a society, by resisting or changing, to maintain an acceptable level of operation after the occurrence of a phenomenon or dangerous event.
In this context, civil protection is the public service oriented to the study and prevention of situations of serious collective risk, catastrophe or public calamity and to the protection and rescue of people and property in cases where such situations occur.