Aave founder Stani Kulechov said at the DAS London summit on November 11 that DeFi should not treat smart contract immutability as its supreme principle, and that lending protocols need to introduce circuit breakers similar to those in traditional financial markets. He warned that if an oracle fails, lending pools without emergency intervention mechanisms could take years to resolve the resulting risks. In April this year, KelpDAO suffered an attack that caused losses of about $292 million, leading to an outflow of about $8.45 billion from Aave within 48 hours. Kulechov advocates using risk isolation and emergency freeze mechanisms to prevent a single failure from escalating further.