Cost of Attack Analysis
Cost of attack analysis is a quantitative evaluation of the financial resources required to compromise a network's security, such as performing a double-spend or censoring transactions. In proof-of-work systems, this is often estimated by calculating the cost of renting or acquiring the majority of the network's hash rate.
In proof-of-stake systems, it involves calculating the cost of acquiring enough staked tokens to control the consensus process. This analysis is vital for understanding the security guarantees of a protocol and the risks faced by users of the network.
A higher cost of attack generally indicates a more secure and robust system. By constantly monitoring these costs, developers and security researchers can identify vulnerabilities and advocate for protocol changes that increase the economic cost for malicious actors to interfere with the network.