This is an important start:
In 2011, the ministry identified 2,169 websites with photos of women in sensual poses and invitations for sexual encounters with minors, the ministry said in a Tuesday statement. Many of the sites were hosted in the United States.
The ministry said that 1,100 of the websites have eliminated their sex-oriented content and that it was trying to convince the remaining sites to do the same.
Certainly, such measures won’t stop sex tourism in its entirety, but it’s a good step in fighting against foreign tourists exploiting Brazilian women and children.