Cryptocurrency was built on the promise of decentralization, transparency, and security. Yet, as digital assets have grown into a multi-trillion-dollar ecosystem, they’ve also become prime targets for cybercriminals. Over the past decade, some hacks have led to billions of dollars in losses, shaking investor confidence and forcing industry-wide improvements in security.

This article explores the 10 biggest crypto hacks of all time — analyzing how they happened, what vulnerabilities were exploited, and how the industry responded.

1. Bybit — $1.5 Billion (2025)

The largest crypto hack in history occurred on Feb. 21, 2025, when attackers siphoned off roughly 401,000 Ethereum (ETH) — worth about $1.4–1.5 billion at the time — from…