GriffinAI on BSC lost $3M on September 24, 2025 when misconfigured LayerZero peer validation let attacker initialize a fake peer on Ethereum and mint 5B unauthorized GAIN tokens on BSC. Attacker swapped ~150M tokens before GAIN crashed 90%.

The attackers exploited a misconfigured LayerZero bridge along with a compromised private key for the GAIN BSC contract. By setting a malicious peer contract on Ethereum, they bypassed validation checks and minted 5 billion counterfeit GAIN tokens on BSC. The attackers then sold approximately 150 million of these counterfeit tokens (about 2.8% of the total fake supply) on PancakeSwap, cashing out around USD 3 million.