GMX offered a 10% "bug bounty" to the hacker if they returned the funds. As of 24 hours after the theft, the hacker had not acknowledged the offer, and had begun swapping the stolen tokens.
GMX exchange hacked for $42 million
The decentralized perpetual exchange GMX has been exploited for $42 million. The exploit involved a vulnerability in one version of the exchange's price calculation smart contract. GMX paused some trading while they investigated the hack, and placed other temporary restrictions on the platform.