Hacked Tokyo cryptocurrency exchange to repay owners $425 mln

Tokyo-based cryptocurrencyexchange Coincheck Inc said on Sunday it would return about 46.3billion yen ($425 million) of the virtual money it lost tohackers two days ago in one of the biggest-ever thefts ofdigital money.Coincheck said in a statement it would repay the roughly260,000 owners of NEM coins in Japanese yen, though it was stillworking on timing and method.The theft underscores security and regulatory concerns aboutbitcoin and other virtual currencies even as a global boom inthem shows