For several years the National Observatory of sensitive urban areas (“l’Observatoire national des zones urbaines sensibles –Onzus-“) has used the Victimhood Survey (“CVS”) to analyze the insecurity felt and expressed by persons inhabiting sensitive urban areas. The studies we may publish using the IRIS variable will aim to highlight the causes behind this feeling of insecurity (using namely the logit models). Is there a “Zus effect” determining the feeling of insecurity in a neighborhood or at home ?