Mixin Network offers $20M bug bounty to hackers in $200M hack

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Mixin Network, a decentralized cross-chain protocol, in a message to the hacker behind the $200 million exploit on Sept. 23, has offered a $20-million bug bounty for the return of the remaining funds.

Mixin Network encrypted the message with the exploiter transaction, requesting the exploiter to return the funds as the majority of the stolen funds were user assets.

“Most of our platform assets were users, and we hope you can refund them. You can keep $20M of the assets as a BUG Bounty Reward for the BUG.”

Mixin Network confirmed the exploit on Sept. 25, claiming the exploiters managed to breach a third-party cloud service provider, which resulted in the theft of nearly $200 million of assets from the platform.

Feng Xiaodong, founder of Mixin, said at the time that the company would reimburse affected users up to a “maximum of 50%,” with the remaining amount being handed back in bond tokens that the business would then repurchase with its earnings.


Mixin is yet to offer full details about what led to the exploit, but an on-chain analytic platform highlighted a history of the hacker’s interactions with Mixin Network. The hacker-associated address 0x1795 received 5 Ether (ETH) from Mixin in 2022.

Related: Remitano exchange hacked for $2.7M; $1.4M frozen by Tether

While it is still unclear how the exploiters managed to steal $200 million worth of assets through a data breach, cross-chain protocols in the decentralized finance (DeFi) space have been the target of some of the biggest exploits in crypto history. One report indicates more than half of all DeFi exploits occur on cross-chain protocols, which have resulted in losses of over $2.5 billion.

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Bridge exploits account for more than 50% of DeFi losses. Source: Token Terminal

Cross-chain protocols help with interoperability between different chains, allowing users to send assets from one blockchain to another. Thus, these cross-chain protocols often hold a significant amount of assets from multiple chains, making them vulnerable to such exploits.

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