I read this on Bitcoin News , additional information in cryptoworld.
Cybersecurity experts have warned that half of the stolen "NEM" coins might have been laundered already on the darknet.  
That's why Japanese authorities have decided to set up a center dedicated to combatting cybercrime, including crypto theft . 500 analysts and investigators from different branches of country's law enforcement agencies have joined the unit.
I know some members here have their NEM token on their wallet...
This restriction of Japan on the growing cybercrime trend in crypto world is what we need to avoid different scams.