Binance experienced a breach on Oct. 29, 2026, with approximately $6.3 billion to $6.4 billion in digital assets removed from its wallets, marking the largest reported cryptocurrency theft by dollar value. Blockchain analytics firms provided initial estimates, but a completed forensic investigation has not yet confirmed final figures or the precise mechanics of the unauthorized transfers.
The loss exceeds Bybit's February 2025 breach—previously the industry's largest single theft—by more than four times, at $1.5 billion.
Dollar-value comparisons tell an incomplete story. Bitcoin's appreciation over the past decade means older incidents involved vastly larger quantities of BTC despite lower dollar values at the time. Mt. Gox, for example, involved hundreds of thousands of vanished Bitcoin—a larger loss by volume than the Binance incident measured in BTC terms.
Initial compromised amounts also do not always reflect ultimate financial damage. Assets can be frozen, recovered, or reimbursed. The BSC Token Hub exploit involved roughly $570 million in newly minted BNB, but only a fraction moved beyond the affected ecosystem. The Poly Network attacker returned most stolen assets, demonstrating the gap between initial value compromised and permanent loss.
The Oct. 29 incident establishes a new benchmark for reported exchange security failures by dollar value and underscores persistent challenges in securing digital assets at scale.
