According to Odaily Planet Daily, Hong Kong media said that the Interpol website showed that "Coin Master" Huang Zhengjie had been issued a red warrant by Interpol for suspected one count of fraud and two counts of theft.

In 2019, Wong Chung-kit was arrested by the Commercial Crime Bureau of the Hong Kong law enforcement agency on suspicion of conspiracy to defraud, involving the promotion of virtual currency mining machines without delivering them.