Network Security Model

Definition ∞ A network security model defines the architectural framework and operational procedures designed to protect a blockchain network from attacks, vulnerabilities, and unauthorized access. This encompasses the consensus mechanism, cryptographic primitives, and economic incentives that collectively secure the network’s integrity and availability. A robust security model is paramount for ensuring the trustworthiness of transactions and the immutability of the ledger. It dictates how the network resists malicious actors.
Context ∞ News frequently reports on the strengths and weaknesses of various network security models, especially when discussing major blockchain upgrades or incidents involving exploits. Debates often compare proof-of-work versus proof-of-stake security assumptions and their respective resilience against different attack vectors. The ongoing evolution of these models is a constant focus for protocol developers and a key factor in assessing the long-term viability of digital asset platforms.