Add Network observer attack: Identify Internet user as a Bitcoin user

OpenBitcoinPrivacyProject / wallet-ratings

Criteria for evaluating Bitcoin wallets' privacy properties.

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Add Network observer attack: Identify Internet user as a Bitcoin user #139

Open kristovatlas opened 8 years ago

kristovatlas commented 8 years ago

Thinking about what may be leaked by using a full node client without a private network to obfuscate IP address, this is one of the things betrayed.

Countermeasure: Tor/VPN/etc.

dcousens commented 8 years ago

Was relating "bitcoin activity time" to "corresponding transactions in the mempool at that time" an attack? I know we had similar, but I think it was related to matching it against an existing set of related addresses, not "all transactions in the mempool".