The KayaFX broker scam was one of the biggest scam brands in Europe in the binary options era. Tens of thousands of victims probably lost tens of millions of euros to the scam. Among them were many Spanish victims. Hence, Spanish law enforcement authorities have been investigating KayaFX, related brands such as WDC Markets, GrandeFX, Grandefex, Libra Markets, the involved boiler rooms, and facilitating payment processors since as early as 2018. Recently, most of the websites went offline amidst law enforcement action in different jurisdictions.