According to Techub News, according to Nikkei News, DMM Bitcoin, a cryptocurrency asset (virtual currency) trading company under the DMM.com Group, has experienced an improper outflow of Bitcoin, with the outflow amount being approximately 48 billion yen (approximately US$305.9 million). The company announced that it will do its best to protect the leaked Bitcoins of customers with the support of the group companies.

This is the second largest hacker attack loss amount for a Japanese cryptocurrency exchange. In 2018, Coincheck was hacked and lost 58 billion yen.