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Maximal Extractable Value (MEV) bots who were trying to perform “sandwich trades” got outsmarted by a rogue validator, leading to a loss of $25 million worth of digital assets.

In a tweet, blockchain security firm CertiK highlighted that bots trying to execute sandwich transactions — spotting when traders are trying to purchase tokens and getting in between the trade for some profit — lost a massive amount of crypto to a validator that went rogue.