Assistant Prof. of Electrical and Computer Engineering,Carnegie Mellon University
Anonymity Vulnerabilities in Bitcoin’s Peer-to-Peer Network
Recently, researchers have demonstrated deanonymization attacks that exploit weaknesses in the Bitcoin network’s peer-to-peer (P2P) networking protocols. In particular, the P2P network currently forwards content in a structured way that allows observers to link users’ Bitcoin addresses to their IP addresses. This is a substantial privacy vulnerability that extends to several other cryptocurrencies as well. In this talk, I will discuss how these attacks work, and how effective they are at deanonymizing users. I will also talk about countermeasures, including proposed modifications to the networking stack.
- An Analysis of Anonymity in Bitcoin Using P2P Network Traffic by P. Koshy, D. Koshy, and P. McDaniel
- Deanonymisation of clients in Bitcoin P2P network by A. Biryukov, D. Khovratovich, and I. Pustogarov.
- Dandelion: Redesigning the Bitcoin Network for Anonymity by S. B. Venkatakrishnan, G. Fanti, and P. Viswanath
Giulia Fanti is an assistant professor of ECE at Carnegie Mellon University, with a focus on privacy-preserving technologies. She obtained her Ph.D. in EECS from U.C. Berkeley, and her B.S. in ECE from Olin College of Engineering in 2010. She is a recipient of the National Science Foundation Graduate Research Fellowship, as well as a Best Paper Award at ACM Sigmetrics 2015 for her work on anonymous rumor spreading, in collaboration with Peter Kairouz, Sewoong Oh and Pramod Viswanath.