EU Watchdog Says Reordering Blockchain Transactions Might Be Market Abuse. Industry Says It's Not

MEV is often called an “invisible tax” on users, since certain methods for extracting it, like sandwich attacks and frontrunning, can eat directly into end-user profits. While MEV is a controversial topic even within the industry, some industry advocates argue that MEV plays a positive role in general since it can help to improve blockchain network efficiency.