Aave founder Stani Kulechov warns of immutability risks in DeFi

Kulechov says lending protocols need circuit breakers because oracle failures could take years to unwind Aave founder Stani Kulechov has a message for DeFi purists who treat unchangeable code as the highest virtue. Sometimes you need a way to hit pause. Speaking at DAS London on November 11, 2026, Kulechov argued that DeFi lending protocols need circuit breakers. His reasoning: when an oracle fails, the fallout could take years to unwind . Lending protocols depend on oracles, the data feeds that tell smart contracts what an asset is worth. If it goes blurry, the protocol starts making decisions based on prices that aren’t real. On a lending platform, those decisions include liquidations.

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