The exchange, which is owned by Remixpoint, said about 2.5 billion yen of stolen funds belonged to customers, while Bitpoint owned the rest.
The funds were stolen from a hot wallet that contained five cryptocurrencies including Bitcoin and Bitcoin Cash. It said it hasn’t discovered any funds missing from cold wallets. The exchange was among cryptocurrency operators ordered by Japan’s Financial Services Agency to improve internal controls following the 2018 hack of Coincheck.