Cryptocurrency exchange Bybit said last week hackers had stolen digital tokens worth around $1.5 billion, in what researchers called the biggest crypto heist of all time. Bybit CEO Ben Zhou said the crypto was taken from a "cold wallet" - a digital wallet usually stored offline and so supposedly more secure - that was used for ether tokens.

Bybit has officially filled the $1.4 billion hole left by one of the biggest crypto hacks in history. CEO Ben Zhou announced that the exchange