Hacker returns stolen funds to Tender.fi, gets $97K bounty reward

Mar 07. 2023

By Felix NG

The bounty, which was offered via an on-chain message, was about $97,000, or 6% of the exploit amount.

The hacker behind the exploit of the decentralized finance lending platform Tender.fi has returned the stolen funds for a $97,000 bounty reward in Ether

(ETH $1,554).

 The exploit was executed at 10:28 am UTC on March 7, with Tender.fi confirming the incident on Twitter soon after, citing “an unusual amount of borrows” and adding it has paused all borrowing.

Blockchain data showed the exploiter used a price oracle glitch to borrow $1.59 million worth of assets from the protocol by depositing 1 GMX token, valued at around $71.

“It looks like your oracle was misconfigured. contact me to sort this out,” the hacker wrote in an on-chain message.

Eight hours later, the DeFi protocol announced it had come to an agreement with the “White Hat” exploiter, in which the hacker would repay all loans minus a 62.16 ETH “bounty,” worth around $97,000 at current prices. 

Another hour later, Tender.fi confirmed on Twitter that the exploiter had completed the loan repayments.

“Funds are officially SaFu, post mortem on the way,” it wrote. 

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