What Is the Theoretical Attack Vector Remaining in PoA?
The theoretical attack vector remaining in PoA involves a coordinated effort between a majority of the PoW miners and a majority of the PoS stakers. While the PoW cost deters casual attacks, a well-funded, coordinated entity could potentially mine a malicious block template and then ensure it is signed and validated by a majority of the stakers.
This requires significant collusion and economic resources, making it highly improbable but not impossible.
Glossar
Attack Vector
Exposure ⎊ An Attack Vector identifies a specific pathway or vulnerability within a decentralized application, smart contract, or underlying blockchain infrastructure that a malicious actor can exploit to compromise security or financial integrity.
PoA
Mechanism ⎊ Proof of Authority (PoA) is a consensus mechanism where transactions are validated by a limited number of pre-approved, trusted validators rather than through competitive mining.
Theoretical Attack Vector
Analysis ⎊ Theoretical Attack Vector assessment involves modeling potential exploits against a blockchain or smart contract based on mathematical possibility rather than current practical feasibility, often exploring worst-case scenarios for security design.