Echo Protocol’s eBTC on Monad was compromised due to an admin private key leak. The attacker granted themselves minting rights, minted 1,000 unbacked eBTC (~$76.7M nominal value), deposited 45 eBTC (~$3.45M) as collateral into Curvance to borrow ~11.29 WBTC (~$867K), bridged it to Ethereum, swapped for ETH, and sent ~384 ETH (~$821K) to Tornado Cash. The remaining 955 eBTC stays under attacker control, posing ongoing depegging risk.