A presumption of guilt is any presumption within the criminal justice system that a person is guilty of a crime, for example a presumption that a suspect is guilty unless or until proven to be innocent. Informal and legally illegitimate presumptions of guilt may also arise from the attitudes or prejudices of those such as judges, lawyers or police officers who administer the system. Such presumptions may result in suspects who are innocent being brought before a court to face criminal charges, with a risk of improperly being found guilty.