Binance hack ranks among the biggest crypto thefts after estimated $6.3 billion loss

A security breach at Binance, the world’s largest cryptocurrency exchange, left an estimated impact of $6.3 billion, which the company called the biggest crypto theft on record. For payment providers and other high-risk infrastructure players, the point is not the headline number alone: it is the familiar pattern of assets being frozen, losses being covered, and the operational weak spot sitting somewhere in the authorization chain.

1. Binance said it located and froze about $3 billion of the affected assets with help from industry partners. It has not yet given an update on the remaining $3.3 billion. Co-founder Yi He said the platform will cover “all losses derived from the hack.”
2. The episode put client-funds security back at the center of the digital assets market. Since bitcoin was created in 2008, the crypto industry has seen repeated thefts that forced investors to reassess custody risk and the mechanics of moving funds.
3. The February 2025 attack on Bybit showed that even offline wallets can be compromised if the authorization process fails. Attackers took ether tokens worth about $1.5 billion from a cold wallet, a setup usually treated as safer because it is not permanently connected to the internet.
4. That case showed the technical storage layer is only part of the problem: if the transfer workflow or the credentials used to approve it are exposed, offline custody does not save the day.
5. Other major incidents include Poly Network in August 2021, which lost about $610 million after a hacker exploited a flaw in its cross-chain exchange protocol, and Ronin Network in March 2022, which suffered a theft of around $540 million after attackers compromised the system used to move funds between the game’s blockchain and other networks.

Ronin’s losses included 173,600 ether and 25.5 million USD Coin. The attack went unnoticed for several days and was only detected when a user could not withdraw funds. Poly Network’s attacker later returned almost all of the funds, after a sequence that included public exchanges with the company.