What Happened?
In 2025, Ethereum rolled out a new upgrade that added extra security checks to normal wallets. Attackers took advantage of these new rules to steal a large amount of Binance’s funds.
The 2025 Upgrade Explained
The upgrade introduced a feature that required wallets to verify a set of signatures before executing a transaction. This was meant to protect users from phishing and other malicious actions.
How the Attack Worked
- Hackers obtained 50 signatures from Binance’s own wallet.
- They used the upgraded wallet logic to combine those signatures with a transaction that moved millions of dollars.
- Because the upgrade only checked for the presence of signatures, the attack succeeded even though the signatures came from Binance itself.
Impact on Binance
Binance reported a loss of roughly $6 billion. The upgraded Ethereum logic played a role by making it easier for attackers to move large amounts of assets without triggering the usual safeguards.
Lessons for Crypto Users
Users should keep their private keys safe, use multi‑signature wallets, and stay informed about network upgrades that may change how transactions are validated.
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