A certain MEV bot was attacked, resulting in a loss of 20 million dollars, due to funds being replaced during the bundle trading process

ChainCatcher message, Twitter user @GaoFlynn posted: "Several large MEV arbitrageurs have been severely impacted, with a malicious actor appearing in one link of the entire mechanism chain, potentially from builder to relayer to validator. This could be the first major turning point that shakes the entire MEV ecosystem.

In simple terms, a hacker obtained the bundle transaction of a large sandwich arbitrage bot, which included 1. a large buy, 2. the transaction of the user being squeezed, and 3. a large sell. The hacker obtained this bundle, dismantled it, replaced 2 with their own transaction, exchanged the bot's funds for cheap tokens, and then the third transaction failed."

Additionally, according to a tweet from @punk3155, a certain MEV bot has suffered the aforementioned attack, with total losses reaching 20 million dollars. (source link)