In what may be the largest attack in decentralized finance (DeFi), unknown hackers used an exploit on cross-chain protocol Poly Network to remove at least $610 million from three chains.
According to a Tuesday update on Twitter, Poly Network said the attacks had removed assets from Binance Chain, Ethereum and the Polygon network. Blockchain data from the respective networks shows the hackers stole roughly $273 million from Ethereum, $85 million in USD Coin (USDC) from the Polygon network, and $253 million from the Binance Smart Chain. Poly also reported renBTC, wrapped Bitcoin (WBTC), and wrapped Ether (WETH) were involved in the exploit.