TOKYO -- Two more Japanese cryptocurrency market operators are quitting as regulators tighten oversight of the sector, which makes five exchanges closing so far in the wake of a half-a-billion-dollar cryptocoin theft in January.
Tokyo GateWay and Fukuoka-based Mr. Exchange are withdrawing their applications to register with Japan's Financial Services Agency as exchange operators. The FSA on March 8 ordered both to improve their data security and other safeguards after they were found to be lacking.
