Loss of approximately $104,000: Secured Finance lending market suffers attack

Odaily News: The decentralized lending protocol Secured Finance's lending market was attacked on September 5, resulting in a loss of approximately $104,000. The root cause was that collateral was priced based on the average execution price of the order book for the current block, allowing attackers to influence the price through self-trading, causing fraudulent lending positions to be counted as valid collateral. The attacker initially deployed the contract but did not execute immediately, then used flash loans and self-trading to inflate the price and withdraw USDC. The original attacking wallet was rolled back due to insufficient gas fees; approximately 48 seconds later, the general-purpose sandwich bot coffeebabe took about 0.9 WBTC, worth approximately $72,000, and transferred about 28.8 ETH of it to the ultra sound money builder, keeping only about $29 for itself. Subsequently, another bot took part of the USDC.