Cited by 1,116Blockchain Technology Applications and SecurityCryptography and Data SecurityBlockchain Technology in Education and Learning

The DOI matches its Crossref record; 168 of the 173 references it cites were found in a registry or an index.

A Survey on Security and Privacy Issues of Bitcoin

Open access
Conti, Mauro, Sandeep Kumar, E., Lal, Chhagan, Ruj, Sushmita·2018·IEEE Communications Surveys & Tutorials

Abstract

Bitcoin is a popular cryptocurrency that records all transactions in a distributed append-only public ledger called blockchain. The security of Bitcoin heavily relies on the incentive-compatible proof-of-work (PoW) based distributed consensus protocol, which is run by the network nodes called miners. In exchange for the incentive, the miners are expected to maintain the blockchain honestly. Since its launch in 2009, Bitcoin economy has grown at an enormous rate, and it is now worth about 150 billions of dollars. This exponential growth in the market value of bitcoins motivate adversaries to exploit weaknesses for profit, and researchers to discover new vulnerabilities in the system, propose countermeasures, and predict upcoming trends. In this paper, we present a systematic survey that covers the security and privacy aspects of Bitcoin. We start by giving an overview of the Bitcoin system and its major components along with their functionality and interactions within the system. We review the existing vulnerabilities in Bitcoin and its major underlying technologies such as blockchain and PoW-based consensus protocol. These vulnerabilities lead to the execution of various security threats to the standard functionality of Bitcoin. We then investigate the feasibility and robustness of the state-of-the-art security solutions. Additionally, we discuss the current anonymity considerations in Bitcoin and the privacy-related threats to Bitcoin users along with the analysis of the existing privacy-preserving solutions. Finally, we summarize the critical open challenges, and we suggest directions for future research towards provisioning stringent security and privacy solutions for Bitcoin.

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Metadata

Authors
Conti, M., Sandeep Kumar, E., Lal, C., & Ruj, S.
Affiliations
  • University of Padua (IT)
  • Manipal University Jaipur (IN)
  • Indian Statistical Institute (IN)
Venue
IEEE Communications Surveys & Tutorials
Published
2018
Volume
20
Issue
4
Pages
3416-3452
ISSN
  • 1553-877X (ISSN-L)
  • 2373-745X
OpenAlex
W2624307925
Cited by
1,116
References
173
Citations by year
2026: 84 · 2025: 125 · 2024: 94 · 2023: 135 · 2022: 145 · 2021: 164 · 2020: 160 · 2019: 137 · 2018: 67
FWCI
213.02
Type
journal article
Language
en
Open access
Locations
  • IEEE Communications Surveys & Tutorials (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Computer Science › Information Systems › Blockchain Technology Applications and Security
  • Physical Sciences › Computer Science › Computer Networks and Communications › Cryptography and Data Security
  • Physical Sciences › Computer Science › Information Systems › Blockchain Technology in Education and Learning
Keywords
Bitcoin, cryptocurrency security, blockchain, proof-of-work, distributed consensus, mining, vulnerability (computer security), anonymity, privacy risks, security countermeasures

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