A major cryptocurrency exchange says it was the victim of a sophisticated hack that stole about $1.5 billion worth of digital currency, marking one of the biggest online thefts of all time. Bybit said Friday that a routine transfer of Ethereum,

Mangione, 26, didn’t speak at the hearing. Judge Gregory Carro ordered him to remain handcuffed, calling it a security measure. Mangione’s lawyer, Karen Friedman Agnifilo, argued that the sight of Mangione in shackles in the closely watched case was robbing him of his presumption of innocence.

Dubai-based crypto exchange Bybit has suffered one of the largest hacks in digital currency history, losing approximately $1.5 billion worth of Ethereum. The security breach led to a "bank run" exceeding $4 billion in withdrawals.