A newly drafted amendment to the XRP Ledger formally codifies why flash loan attacks cannot occur on the network, pointing to the chain's atomic transaction architecture as the key barrier. Unlike Ethereum, where flash loans allow users to borrow, exploit, and repay funds within a single transaction block, XRPL's transaction model prevents the necessary conditions for such exploits from existing. The amendment describes the vulnerability as 'structurally impossible' on XRPL, a design distinction that has shielded the network from an exploit class responsible for hundreds of millions — arguably billions — in losses across Ethereum-based DeFi protocols. The proposal highlights the trade-offs between different blockchain architectures and positions XRPL's constraints as a potential security advantage as its own DeFi ecosystem continues to develop.
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