Bitcoin’s Blockchain Peer-to-Peer Network Security Attacks and Countermeasures

Mostafa, M.A.

doi:10.17485/ijst/2020/v13i07/149691

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…Nevertheless, as noted by Hassan et al [11], despite the numerous threats to the networking layer, very few papers address them specifically. Indeed, we were able to find only two works focusing on network-level security: a short paper by Cao et al [15], which briefly reviews routing attacks and deanonymization, a work by Mostafa et al [16], which covers a vast range of attacks in the Bitcoin network. While the latter is the closest to our work, attacks and countermeasures are still described at a high level, without showing the details of how they are performed.…”

Section: Related Workmentioning

confidence: 99%

SoK: Network-Level Attacks on the Bitcoin P2P Network

Franzoni

Daza

2022

IEEE Access

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Over the last decade, Bitcoin has revolutionized the global economic and technological landscape, inspiring a new generation of blockchain-based technologies. Its protocol is today among the most influential for cryptocurrencies and distributed networks. In particular, the P2P layer represents a reference point for all permissionless blockchains, which often implement its solutions in their network layer. Unfortunately, the Bitcoin network protocol lacks a strong security model, leaving it exposed to several threats. Attacks at this level can affect the reliability and trustworthiness of the consensus layer, mining the credibility of the whole system. It is therefore of utmost importance to properly understand and address the security of the Bitcoin P2P protocol. In this paper, we give a comprehensive and detailed overview of known network-level attacks in Bitcoin, as well as the countermeasures that have been implemented in the protocol. We propose a generic network adversary model, and propose an objectivebased taxonomy of the attacks. Finally, we identify the core weaknesses of the protocol and study the relationship between different types of attack. We believe our contribution can help both new and experienced researchers have a broader and deeper understanding of the Bitcoin P2P network and its threats, and allow for a better modeling of its security properties.INDEX TERMS blockchain, bitcoin P2P network, bitcoin security, survey

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Section: Related Workmentioning

confidence: 99%

SoK: Network-Level Attacks on the Bitcoin P2P Network

Franzoni

Daza

2022

IEEE Access

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“…I N recent years, blockchain technology has been widely studied with the rapid development of Bitcoin [1] [2]. Blockchain is a distributed network system, in which each node maintains an append-only ledger [3] [4].…”

Section: Introductionmentioning

confidence: 99%

Joint Reputation Based Grouping and Hierarchical Byzantine Fault Tolerance Consensus Protocol

Qin

Guan

2023

IEEE Access

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Consensus protocol has challenges in terms of low consensus efficiency and centralization, as well as poor fault tolerance. A joint reputation model based grouping and hierarchical byzantine fault tolerance consensus protocol has been proposed. It is composed of both grouping and hierarchical models. The grouping model uses joint reputation values to balance node grouping, minimize overall differences in joint reputation values among groups. Some nodes with a joint reputation value ranking in the top 50% of the group are randomly selected as function ones, which improves the degree of decentralization compared to some election strategies of leader nodes. In the hierarchical model, nodes in each group are layered and the supervision nodes are mapped to the upper layer, which improves consensus network security and efficiency. Besides a new communication structure has been designed to improve fault tolerance and reduce communication complexity by improving the three phases of Practical Byzantine Fault Tolerant (PBFT). Comparative experiments have shown the superiority of the developed protocol over other existing protocols.

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