Ben Zhou, Bybit's CEO, said that the hack had affected around 401,000 Ethereum and sparked a surge in withdrawal requests.

Bybit, one of the world’s largest cryptocurrency exchanges, experienced a hack Friday in which over $1.4 billion worth of crypto was stolen, according to blockchain-analytics firms. It’s the latest incident for an industry struggling with security concerns that present hurdles to mainstream adoption.

Crypto exchange Bybit said it was hacked, resulting in what analysts estimate was the loss of almost $1.5 billion worth of tokens in the biggest theft ever committed in the industry. Researchers believe North Korean hackers were likely responsible.