Prevention

Security is protection from, or resilience against, potential harm (or other unwanted coercion). Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, or any other entity or phenomenon vulnerable to unwanted change. thumb|Refugees fleeing war and insecurity in Iraq and Syria arrive at [[Lesbos Island, supported by Spanish volunteers, 2015]] Security mostly refers to protection from hostile forces, but it has a wide range of other senses: for example, as the absence of harm (e.g., freedom from want); as the presence of an esse

thumb|upright=1.2|Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against "stray light" from the sides.

process by which a medical professional investigates the body of a patient for signs of disease

thumb|A tractor being mechanically repaired in Werneuchen, 1966 thumb|Field repair of aircraft engine (1915–1916)

war initiated to prevent another party from attacking

methods to prevent destructive asteroid hits

active measures to decrease the risk of cancer

controversial policy of detention for non-punitive reasons

type of eye-wear used to view the sun

causes of death related to risk factors which could have been avoided

person who by agreement stays sober in order to drive a vehicle for non-sober persons

proactive prevention against computer hacking

improvements to an organization's processes and elimination of non-conformities or other undesirable situations

strategy for reducing the amount of waste created and released into the environment, particularly by industrial facilities, agriculture, or consumers