One Article Review
| Source |  AlienVault Blog |
|---|---|
| Identifiant | 463357 |
| Date de publication | 2018-02-01 14:00:00 (vue: 2018-02-01 14:00:00) |
| Titre | Mitigating Blockchain Analysis: Mixing Cryptocurrency |
| Texte |
Cryptocurrency and Blockchain Analysis
Cryptocurrency is a digital currency, and it comes in many forms, built upon varying Blockchain technologies. Bitcoin is the original cryptocurrency, created in 2009 by cypherpunk Satoshi Nakamoto. Since then, many new alternative cryptocurrencies have been created, popular alternatives are Litecoin, Ethereum, and Monero.
Samuel Falkon had it right when he said that “cryptocurrencies are a dream for privacy and freedom lovers because they restore transacting power back to whom it belongs — individuals who have a right to control their own money.” While cryptocurrency is a great advancement for a cypherpunk’s dream of privacy, it still comes with its own set of flaws that allow for deanonymization through Blockchain analysis and off-chain analysis.
Bitcoin is often thought to be an anonymous solution for digital transactions, but this simply is not true. Every time a transaction is made, the technical details of said transaction becomes a public record on the Blockchain. The Blockchain is a public ledger that holds a history of all transactions ever made, thus leaving the potential for analysis of said transactions.
Blockchain analysis services include:
https://www.walletexplorer.com
https://chainalysis.com
https://scorechain.com
https://blockseer.com
https://coinalytics.co
https://sabr.io
https://elliptic.co
http://numisight.com
And many more
More recently, The Bitfury Group released a whitepaper for their new Blockchain analysis algorithm with the goal of identifying the users behind digital transactions, dubbing their deanonymization solution as a “Bitcoin clustering” algorithm. Bitcoin address clustering is self-described as “a process that exposes bitcoin users by determining which addresses belong to a single user through an analysis of Blockchain data. The act of clustering groups those addresses together, enabling investigators to link them to a single entity.” (The Bitfury Group Unveils Solution For Analyzing Related Bitcoin Addresses, The Bitfury Group)
The Bitfury Group’s analysis research should not be shocking to us. They perform Blockchain analysis, just as we should expect adversaries to do. The innovative part of this algorithm is that they are also analyzing publicly available information on the web, or as they call it “off-chain tag collection” to aid their clustering algorithm. There are two tag collection approaches that The Bitfury Group takes: passive and active.
Off-chain tag collection for clustering, passive tag collection:
The passive approach includes crawling the web for publicly available information, typically on |
| Envoyé | Oui |
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