External Dependency Flaw

Definition ∞ An external dependency flaw represents a security vulnerability or operational risk that originates from a system’s reliance on external software components, services, or data feeds. Such a flaw can compromise the integrity or functionality of the main system if the external element is exploited or fails. It highlights a critical point of potential weakness.
Context ∞ In blockchain and smart contract development, external dependency flaws are a significant concern, often leading to exploits if an external oracle or linked protocol is compromised. News reports on DeFi hacks frequently detail how these vulnerabilities are leveraged by attackers. Robust security audits and careful selection of external services are vital to mitigate these risks.