According to Foresight News, Arkham monitoring found that a user used a MEV robot to flash loan $12 million for a "sandwich" attack arbitrage activity, during which a total of 14 transactions were made. However, when the attack ended and the Gas fee was paid, the user only made a profit of $20.
Foresight News notes that a “sandwich” attack occurs when an attacker sandwiches a victim’s transaction between two of their own transactions in order to manipulate prices and profit from users.