Smart Contract Contagion

Consequence

Smart contract contagion represents systemic risk propagation within decentralized finance (DeFi) ecosystems, originating from vulnerabilities or failures in one contract and cascading to others through interconnected protocols. This occurs primarily via collateral dependencies, where a compromised asset used as collateral triggers liquidations across multiple positions and platforms, accelerating downward price spirals. The velocity of this contagion is amplified by composability, a core tenet of DeFi, enabling rapid and often automated interactions between contracts, and the lack of traditional circuit breakers present in centralized finance. Effective risk management necessitates a granular understanding of these interdependencies and the potential for correlated failures, particularly in over-collateralized lending protocols.