Yoink MEV Bot Foils $7.8M rsETH Exploit on Ethereum

An attacker attempted to steal $7.8 million in rsETH from an Ethereum Safe wallet on September 15, 2026, using a custom Uniswap v4 module exploit.

The MEV bot 'Yoink' front-ran the attack, capturing the funds before the original attacker could claim them.

Yoink paid nearly 19 ETH to a block builder to secure priority placement in the block, which was submitted first and executed successfully.

Kelp, the protocol behind rsETH, froze the receiving address for 24 hours as a precaution after the incident.