Haven – Blockchain With Biometric Authentication

The post Crypto whale loses $6M to sneaky phishing scheme targeting staked Ethereum appeared on BitcoinEthereumNews.com. A crypto whale lost more than $6 million in staked Ethereum (stETH) and Aave-wrapped Bitcoin (aEthWBTC) after approving malicious signatures in a phishing scheme on Sept. 18, according to blockchain security firm Scam Sniffer. According to the firm, the attackers disguised their move as a routine wallet confirmation through “Permit” signatures, which tricked the victim into authorizing fund transfers without triggering obvious red flags. Yu Xian, founder of blockchain security company SlowMist, noted that the victim did not recognize the danger because the transaction required no gas fees. He wrote: “From the victim’s perspective, he just clicked a few times to confirm the wallet’s pop-up signature requests, didn’t spend a single penny of gas, and $6.28 million was gone.” How Permit exploits work Permit approvals were originally designed to simplify token transfers. Instead of submitting an on-chain approval and paying fees, a user can sign an off-chain message authorizing a spender. That efficiency, however, has created a new attack surface for malicious players. Once a user signs such a permit, attackers can combine two functions—Permit and TransferFrom—to drain assets directly. Because the authorization takes place off-chain, wallet dashboards show no unusual activity until the funds move. As a result, the assets are gone when the approval executes on-chain, and tokens are redirected to the attacker’s wallet. This loophole has made permit exploits increasingly attractive for malicious actors, who can siphon millions without needing complex hacks or high-cost gas wars. Phishing losses The latest theft highlights a wider trend of escalating phishing campaigns. Scam Sniffer reported that in August alone, attackers stole $12.17 million from more than 15,200 victims. That figure represented a 72% jump in losses compared with July. According to the firm, the most significant share of August’s damages came from three large accounts that accounted for nearly half…

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