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Massive $1.4 Billion Hack Hits Bybit Exchange: A Wake-Up Call for Crypto Security

By TotoNewcomer0 rep· 2/21/2025
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The cryptocurrency world is reeling from a staggering security breach at Bybit, a prominent Singapore-based exchange, where hackers drained over $1.4 billion worth of Ethereum (ETH) from its cold wallet. This incident raises serious concerns about the security measures in place at centralized exchanges and the growing sophistication of cyber threats in the crypto space.

 

Key Takeaways

  • Bybit confirmed a hack resulting in the theft of over $1.4 billion in ETH.

  • The attack exploited a vulnerability in the multisig cold wallet authorization process.

  • All other wallets remain secure, and Bybit assures users that their funds are backed 1:1.

  • The incident has prompted an ongoing investigation by security experts and law enforcement.

 

Overview of the Attack

The breach occurred when attackers manipulated the signing interface of Bybit's Ethereum multisig cold wallet. By displaying a legitimate-looking transaction, the hackers tricked the wallet signers into approving a transfer that drained the wallet's assets. This sophisticated method of attack highlights the vulnerabilities that can exist even in systems designed to be secure.

 

Ben Zhou

 

Breakdown of Stolen Assets

The stolen funds included:

  • 400,000 ETH (~$1.1 billion)

  • 90,000 stETH (staked Ethereum)

  • 15,000 cmETH

  • 8,000 cETH

The hacker utilized a smart contract feature to sweep the funds from Bybit's cold wallet, quickly transferring them to a new address before fragmenting the assets across multiple wallets to obscure the transaction trail.

 

Bybit's Response

In the wake of the hack, Bybit's CEO, Ben Zhou, reassured users that the exchange remains solvent and that all other wallets are unaffected. He stated:

"Bybit is solvent even if this hack loss is not recovered; all of clients’ assets are 1:1 backed."

Withdrawals and transactions continue to function normally, and the exchange is collaborating with blockchain security firms to track the stolen assets.

 

Bybit

 

Community Reaction and Market Impact

The crypto community has expressed widespread concern over the incident, questioning how such a significant breach could occur despite existing security measures. Following the news, the cryptocurrency market experienced a downturn, with Ethereum's price briefly dropping by 3% before recovering. The hack has also triggered a wave of outflows from Bybit, with reports indicating that nearly 75% of all Ethereum deposits were drained.

 

CoinMarketCap

 

Sources

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