Definition ∞ Spam-based MEV, or Miner Extractable Value, refers to a specific strategy where validators or miners intentionally fill blocks with low-value, high-fee transactions to increase their revenue. This practice often involves front-running or sandwich attacks, where profitable transaction ordering is manipulated. It can lead to network congestion and degraded user experience.
Context ∞ Spam-based MEV is a contentious topic in blockchain economics and network fairness discussions. News reports sometimes analyze the impact of such activities on transaction costs and network efficiency, particularly on high-demand blockchains. Efforts to mitigate its effects involve protocol adjustments and the development of more equitable transaction ordering mechanisms.
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