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MEV Bot Front-Runs $7.8M rsETH Exploit on Ethereum

Blockaid said the attacker used a custom Safe module and a Uniswap v4 liquidity pool, but Yoink intercepted about $7.73 million in rsETH.

  • On September 15, an attacker attempted to exploit a custom module on an Ethereum Safe wallet to extract about $7.73 million in tokens, but an MEV bot intercepted the funds before the attacker could take control.
  • According to security firm Blockaid, the attacker used a public keeper multicall to direct a custom Uniswap v4 liquidity module into a hooked pool, where tokens were unwrapped during the exploitation attempt.
  • The MEV bot Yoink front-ran the attacker and captured the tokens; Etherscan data shows Yoink transferred about 18.93 ETH, worth roughly $46,000, to a block builder address in the same transaction.
  • Kelp, the protocol behind rsETH, placed the address that received the funds under a 24-hour pause, temporarily preventing the tokens from being transferred as a precautionary measure.
  • Kelp stated that its own contracts remain safe and fully backed, noting that minting and withdrawals continue normally while the team works with security experts to investigate the incident.
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Yesterday (September 15), as many as 2,900 rsETH tokens tied to the Ethereum cryptocurrency worth almost 8...

A hacker exploited Ethereum's safe wallet, Safe, to steal digital assets worth 2,900 rsETH (approximately $7.8 million: 1.2 billion yen). However, the hacker's stolen digital assets were then taken over by a bot. Read more...

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BITRSS broke the news on Tuesday, September 15, 2026.
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