Binance, the world's largest crypto exchange, is locked down right now. As of Thursday, all deposits and withdrawals are suspended while the company investigates what it is calling a "security issue," and crypto experts estimate that as much as $5.9 billion may have been stolen. That would make this the largest hack in the history of digital assets, nearly four times the size of the record-breaking Bybit breach in 2025.

The firm says it has frozen roughly $3 billion of its own assets to stop any further theft. Two other major platforms, Tether and Circle, froze an additional $2.4 billion in response. The numbers are still moving: Binance said the amount frozen "may continue to increase" as its teams trace additional assets alongside law enforcement.

Binance's own estimate of the breach has not been made public. The $5.3 billion figure comes from digital asset advisory firm Glassnode; blockchain analytics firm Chainalysis put it higher, at more than $5.9 billion. Changpeng Zhao, who founded Binance in China in 2017, stepped back from running the firm but remains a major shareholder. He was blunt on X: "It does look like a hack."

What this means if you hold crypto

If you have money sitting on Binance, you cannot move it right now. The company says users' funds are safe and that it "will cover all losses," but those assurances carry weight only if the firm has the reserves to back them up. Binance reported more than $160 billion in assets under custody as of 2024, so it is not a small operation. Whether the pledge holds will depend on the final size of the breach and how much was recovered.

The freeze extends beyond Binance itself. Tether, which issues one of the most widely used dollar-pegged cryptocurrencies, froze around $1.6 billion linked to the incident. Circle, which issues the dollar-pegged USDC token, froze more than $800 million. These platforms acted quickly, but the fact that so many assets were reachable across the system at all shows how connected, and how exposed, the major crypto platforms are to one another.

Bitcoin fell around 5% after the alerts went out. Ethereum and Solana dropped sharply too. For people who treat crypto as a long-term store of value, a single-day move of 5% may feel routine. But for anyone who needed to sell, transfer, or use their holdings Thursday, they found the door locked.

The bigger pattern

This is the second time in roughly two years that a major crypto exchange has been hit by an attack at a scale that would be front-page news in any other financial sector. The Bybit hack in 2025 was attributed to hackers linked to North Korea. No attribution for the Binance breach has been reported yet.

The deeper issue is structural. Traditional banks hold deposits behind layers of federal insurance, regulatory oversight, and mandated security standards. Crypto exchanges operate under a patchwork of rules that vary by country and, in many cases, involve almost no deposit protection for users. Binance has more than 300 million registered users worldwide and has faced regulatory scrutiny across multiple jurisdictions. Binance.US, the separate platform serving American users, says it is not affected by this incident.

What regulators argued for years, that size and popularity do not equal safety, just got another piece of evidence. The question now is whether the $5.9 billion figure holds, whether Binance's promise to cover losses survives contact with the final accounting, and whether this breach finally forces the kind of mandatory security and insurance standards that protect ordinary depositors in every other part of the financial system.