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cs.CR2026
PDoS: A Profitable Denial-of-Service Attack against Proof-of-Work Blockchain Liveness
Junjie Hu, Tianzhu Han, Na Ruan
The security and liveness of Proof-of-Work (PoW) blockchains fundamentally depend on the economic rationality of miners. Existing incentive-driven denial-of-service attacks, such a…
cs.CR2026
Blockchain Attacks and Defenses: A Layered and Cross-Domain Survey
Junjie Hu, Na Ruan
Blockchains have evolved from simple distributed ledgers into programmable platforms that process complex application logic and carry significant financial value. All modern Web3 s…