The most infamous MEV bot in crypto history just had a very bad day. JaredFromSubway, the Ethereum sandwich attack bot that has extracted tens of millions of dollars from unsuspecting DEX traders since 2023, was exploited for over $15 million.

The hunter becomes the hunted

On-chain data confirms the exploit drained more than $15 million from the jaredfromsubway.eth bot’s operations.

MEV bots and sandwich attacks work by watching the mempool, the waiting room where pending transactions sit before being confirmed. When the bot spots a large swap, it places one transaction right before it (front-running) and another right after (back-running). The victim’s trade executes at a worse price, and the bot pockets the difference.

JaredFromSubway has been doing exactly this at industrial scale. The bot has executed hundreds of thousands of sandwich attacks since early 2023, generating gross revenues reportedly exceeding $34 million to $40 million during peak three-month windows. After accounting for the enormous gas fees required to front-run transactions on Ethereum, net profits have been estimated at more than $6 million.