REKT reported that Orbit Chain's Ethereum bridge lost about $81.5 million on 31 December 2023 after what appeared to be a compromised multisig or possible transaction replay issue. The withdrawals included DAI, WBTC, ETH, USDC, and USDT, and the attacker address was reportedly funded through Tornado Cash before the bridge was deactivated. The article notes that the methodical transaction pattern suggested a possible Lazarus connection, but it frames the attribution as an assessment rather than a confirmed finding. Orbit had not yet published a final root-cause postmortem in the source excerpt.