Attackers used the Omni bridge of the Gnosis network to conduct the exploit. Some 200 weighted ether (wETH) was transferred through the bridge on Saturday, and the same transaction was replayed on the PoW chain – resulting in the attacker gaining 200 ETHW, or approximately $1,600 at the time.
Ethereum PoW Sees ‘Replay’ Exploit For 200 ETHW Days After Rocky Start
