The prevention measures against sexual exploitation are supported by the normative and institutional international framework (1949 UN Convention, Palermo Protocol, Warsaw Convention…). Through training and awareness raising, prevention aims to tackle the very causes of sexual exploitation, encourage victim assistance, and deter demand. It targets varied audiences: professionals in contact with the victims, diplomacy and army staff, tourists and tourism professionals, minors, sex buyers of prostitution, the general public, etc. However, these measures have mixed results. Today, the challenge is to endow these initiatives with the human and material means to serve their ambitions.