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Third party trackers on web shops can identify users behind Bitcoin transactions

21
Aug
2017

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More and more shopping Web sites accept cryptocurrencies as a method of payment, but users should be aware that these transactions can be used to deanonymize them – even if they are using blockchain anonymity techniques such as CoinJoin.

Independent researcher Dillon Reisman and Steven Goldfeder, Harry Kalodner and Arvind Narayanan from Princeton University have demonstrated that third-party online tracking provides enough information to identify a transaction on the blockchain, link it to the user’s cookie and, ultimately, to the user’s real identity.

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