Researchers analyzed 20.63 billion transactions across seven blockchain networks, including Ethereum, Base, Optimism, Arbitrum, BNB Chain, Avalanche, and Polygon.

From the articleFlash Loan Attacks Cost DeFi $1.2 Billion Over Four Years, Study Finds - BlockonomiAlso in Flash loan attacks drained $1.211 billion from DeFi, University of Winchester study finds, Logic exploits took 55% of DeFi flash loan losses, overtaking price manipulation