Cited by 273Blockchain Technology Applications and SecurityInternet Traffic Analysis and Secure E-votingCryptography and Data Security

Blockchain Access Privacy: Challenges and Directions

Henry, Ryan, Herzberg, Amir, Kate, Aniket·2018·IEEE Security & Privacy

Abstract

Privacy, facilitated by a confluence of cryptography and decentralization, is one of the primary motivations for the adoption of cryptocurrencies like Bitcoin. Alas, Bitcoins privacy promise has proven illusory, and despite growing interest in privacy-centric blockchains, most blockchain users remain susceptible to privacy attacks that exploit network-layer information and access patterns that leak as users interact with blockchains. Understanding if and how blockchain-based applications can provide strong privacy guarantees is a matter of increasing urgency. Many researchers advocate using anonymous communications networks, such as Tor, to ensure access privacy. We challenge this approach, showing the need for mechanisms through which non-anonymous users can (i) publish transactions that cannot be linked to their network addresses or to their other transactions, and (ii) fetch details of specific transactions without revealing which transactions they seek. We hope this article inspires blockchain researchers to think beyond Tor and tackle these important access privacy problems head-on.

Integrity signals

Registry

Crossref · 10.1109/msp.2018.3111245

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15 of 15 references verified0 citation errors · 0 not checkable

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  • Complete anonymization, decentralization, and untraceability can be realised in 6G networks by blockchain technology.

    “To solve this problem, it is envisioned that complete anonymization, decentralization, and untraceability can be realised in 6G networks by blockchain technology [62].”

    From What should 6G be? (2020) · cites this paper as [62]

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Authors
Henry, R., Herzberg, A., & Kate, A.
Affiliations
  • University of Calgary (CA)
  • University of Connecticut (US)
  • Purdue University West Lafayette (US)
Venue
IEEE Security & Privacy
Published
2018-07
Volume
16
Issue
4
Pages
38-45
ISSN
  • 1540-7993 (ISSN-L)
  • 1558-4046
OpenAlex
W2886177063
Cited by
273
References
15
Citations by year
2026: 7 · 2025: 26 · 2024: 28 · 2023: 40 · 2022: 38 · 2021: 47 · 2020: 46 · 2019: 39 · 2018: 2
FWCI
54.03
Type
journal article
Language
en
Open access
closed
Locations
IEEE Security & Privacy (publishedVersion)
Funders
  • National Science Foundation
  • Israel Science Foundation
Topics
  • Physical Sciences › Computer Science › Information Systems › Blockchain Technology Applications and Security
  • Physical Sciences › Computer Science › Artificial Intelligence › Internet Traffic Analysis and Secure E-voting
  • Physical Sciences › Computer Science › Artificial Intelligence › Cryptography and Data Security
Keywords
blockchain privacy, privacy attacks, Tor, unlinkability, transaction unlinkability, Bitcoin

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