Japanese crypto exchange DMM Bitcoin revealed on Friday that it has fallen victim to one of the most significant hacks in recent years, with over $300 million worth of Bitcoin stolen from its primary wallet. The breach occurred around 1:30 pm local time when DMM Bitcoin detected an unauthorized transfer of approximately 4,503 BTC—valued at about $308 million at the time. The company has yet to disclose the details of how the hack was executed but assured that an investigation is underway.