Is All MEV Considered Harmful or Exploitative?

Not all Maximal Extractable Value (MEV) is considered harmful; some forms are necessary for market efficiency. For example, arbitrage is a form of MEV where bots profit by correcting price discrepancies between different exchanges.

This activity is generally viewed as beneficial because it helps synchronize prices and ensures market efficiency. However, exploitative MEV, such as front-running and sandwich attacks, is widely condemned because it directly harms retail users by worsening their execution price.

What Is the Legal Distinction between Front-Running and High-Frequency Trading (HFT) Strategies?
How Does “Maximal Extractable Value” (MEV) Relate to Front-Running in DEX Transactions?
What Is the Difference between an Arbitrage Bot and a Front-Running Bot?
What Are the Differences between Front-Running in Traditional Finance and on DEXs?
Can Flashbots Prevent All Forms of MEV, or Only Front-Running?
What Is the Difference between Front-Running on a CEX versus a DEX?
What Is Maximum Extractable Value (MEV) and How Is It Related to Front-Running in Crypto?
What Is the Difference between Front-Running in CEXs and DEXs?

Glossar