Following the revelation Friday from cryptocurrency exchange firm Bybit that hackers stole digital tokens worth about $1.5 billion – in what may be the biggest crypto heist of all time – CEO Ben Zhou wrote on X Sunday that it has replenished its reserves. Bybit was able to do this through a mix of emergency loans and large deposits.

Bitcoin headed for its biggest one-day drop since August on Tuesday, driven by nervousness over U.S. tariffs and results from Nvidia, as last week's hack of $1.5 billion worth of ether from the Bybit exchange delivered a blow to investor confidence.

Lazarus Group, hackers based in North Korea, tricked Bybit CEO Ben Zhou into approving a transfer of 400,000 ethereum tokens from his company's cold wallet.

Bitcoin, BTC= the world's largest cryptocurrency by market value, broke below $90,000 to its lowest since November 18, falling by as much as 7.5% at one point. It was last down 5% on the day at $89,314.

Bitcoin dropped below $90,000 to its lowest since November 18 on Tuesday, as market nerves over U.S. tariffs reinforced the blow to crypto investor confidence from last week's $1.5 billion hack of ether from the Bybit exchange.

Over the weekend, blockchain security companies and experts have linked North Korea's Lazarus hacking group to the theft of over $1.5 billion from cryptocurrency exchange Bybit.

Over 400,000 ETH and stETH worth more than $1.5 billion were stolen from the Bybit cryptocurrency exchange. Cryptocurrency exchange Bybit on Friday said a cyberattack allowed hackers to steal roughly $1.5 billion worth of digital currency.