How much do sneaky bots that jump ahead of trades cost everyday users on crypto swap sites?

"Our results suggest that sandwiching, while endemic and profitable on Ethereum L1, is rare, unprofitable, and largely absent in rollups with private mempools."

"On average, attacked traders lost 0.27% of their initial transaction value to front-runners on the Ethereum pool compared to only 0.04% on Polygon."

"Sandwich attacks exploit the interaction between transparent transaction ordering, automated market maker price impact, and user slippage tolerance."

"Ethereum network participants would need to pay an average of $0.21 more per transaction or a total of nearly $7.2 million per month to undo the effects of the MEV agent."

"We find that the majority of flagged patterns are false positives and that the median net return for these attacks is negative."

"In aggregate, bots profited up to twenty-six times more on L1 than L2."

"We find that the front run transaction in a sandwich attack is 48% more likely to appear in the first block quartile."

"Third, using transaction-level data from major rollups, we show that naive heuristics overstate sandwich activity."

"Sandwich attacks, in which a transaction is front run, are extremely frequent, averaging more than one every two blocks."

"while increasing the failure rate of benign labelled transactions by 1.85 percentage points."

"Front run marginal effects are approximately $0.11 per transaction."

"$7.16 million or 99.76% of losses due to reordering are not directly due to transaction reordering associated with sandwich attacks."

"The obtained results demonstrate that Uniswap V2 and Uniswap V3 are the primary targets for MEV extraction; however, their operational mechanisms create distinct conditions for attacks."

"A “sandwich attack” on many blockchains that enable DeFi transactions, including the Ethereum blockchain, is executed by placing two transactions around a large, detected transaction to capitalize on the expected price impact."

"A clear correlation was identified between concentrated liquidity, pricing algorithms, and the scale of MEV exploitation."

"Despite decentralization and transparency, blockchain networks do not guarantee a predictable transaction execution order, leading to the emergence of the phenomenon known as Maximal Extractable Value (MEV) – an additional profit extracted by certain network participants who influence transaction ordering."

"such as sandwich attacks or front running that can have negative repercussions on DeFi users."

"Before September 2022, around $675M was extracted in terms of MEV in Ethereum."

"There have been a number of articles that have attempted to quantify this [Tit23,DGK+20] and the conclusions on the magnitude of user impact are inconsistent."

"in order to allow arbitrage trades to take advantage of uninformed user flow. This type of MEV has been well-studied and in fact"

"This ratio translates to nearly $20 billion in transactions from MEV bot activities alone"

"At the time of this writing, an “MEV-explore” tool [1] estimates the amount of MEV extracted on Ethereum since the 1st of Jan 2020 to be close to $700M."

"an implicit tax that uninformed users pay for"

"accounting for a mere 10.7%. We conclude that these two services only protect a limited number of users, highlighting the growth potential of both services."