Professionals across Europe are dealing with the same difficulties identifying acceptable and unacceptable sexual behaviour and finding the appropriate response in an ever-changing (online) society. The Flag System answers this specific issue in the Netherlands and Belgium. And even though it might need some adjustments to fit other settings and countries, the huge demand, and the results of our need assessment, make us believe there’s a place for this tool in other countries as well. Internationally, organisations are also dealing with the same difficulties.