Whether browsing a website could be considered a “preexisting business relationship” is anyone’s guess, but my gut is that Criteo is in an extremely grey area of the law if they’re doing this to European users.
Browsing your website does not mean I want your spam
fred benenson
39940
I can tell you that this would be illegal in Germany, for sure! Don’t think it is different in France. And from 2018 on the EU will have a unified data protection law which will make this behaviour illegal in any country of the EU.