2024 Griffin AI — Cross-chain exploit, $3.5M loss
Data compromised
$3.5M; token supply manipulation
Technical writeup
Within 24 hours of Binance Alpha launch. Attacker compromised admin wallet (likely phishing), abused LayerZero peer validation to mint 5B $GAIN tokens. Swapped for stablecoins, ~876 ETH, laundered via Tornado Cash. CEO committed $500k USDT buyback; $2M over 12 months. 1:1 restoration for pre-hack holders.
Root cause
Admin wallet compromise; LayerZero peer validation abuse