Attack cost analysis evaluates the economic resources required for a malicious actor to compromise a blockchain network. This assessment considers the capital expenditure for hardware, operational expenses like electricity, and the opportunity cost of not participating honestly. It quantifies the financial barrier to executing attacks such as a 51% attack on proof-of-work systems. The analysis helps determine a network’s resilience against economically motivated adversaries.
Context
In blockchain security discussions, attack cost analysis is a central metric for gauging a protocol’s robustness and decentralization. A high attack cost suggests greater network security, deterring potential attackers due to prohibitive expenses. Conversely, a low cost highlights a network’s vulnerability, often prompting protocol adjustments or increased scrutiny from the community.
The Stubborn Nakamoto protocol modifies Bitcoin's core rules to achieve provable economic security and permissionless design, decoupling finality from energy expenditure.
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