The 10 Biggest Crypto Hacks in History

1. Bybit: $1.4 billion of ETH stolen in 2025 hack

The Bybit hack took place on February 21, 2025. It was the largest single theft of cryptocurrencies in the industry’s history. The Dubai-based crypto exchange lost 400,000 ETH worth $1.4B within minutes when the hackers exploited a private key leak in Bybit’s hot wallet system to siphon off the funds.

In response, Bybit’s CEO acknowledged the attack straight away, and announced a bounty program to retrieve the funds the following day. By February 26, the US FBI officially charged North Korean hackers with the heist.

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