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Ethereum researchers have developed a method to de-anonymize network validators that can reveal the IP addresses of more than 15% of node operators.
To obtain information, the messages exchanged between validators are analyzed, the authors state in the article "Privacy Problems in the P2P Network, and What They Tell Us". De-anonymization can be carried out by nodes acting as "silent observers", i.e. third parties.
"Our deanonymization technology is simple, cost-effective, and capable of identifying more than 15% of Ethereum validators with data in just three days," the article says.
The methodology was developed by observing the Ethereum attestation mechanism, which divides validators into 64 committees, appoints certain node operators as attestation aggregators, and organizes them into subnets.
Each node subscribes to two subnets and communicates with at least one participant. This allows researchers to monitor aggregator messages and de-anonymize nodes.
"By deploying our registration client on four nodes within three days, we were able to de-anonymize more than 15% of Ethereum validators on the P2P network. […] If we run more nodes and conduct the analysis longer, we assume that the figure will increase", the article says.
Source
To obtain information, the messages exchanged between validators are analyzed, the authors state in the article "Privacy Problems in the P2P Network, and What They Tell Us". De-anonymization can be carried out by nodes acting as "silent observers", i.e. third parties.
"Our deanonymization technology is simple, cost-effective, and capable of identifying more than 15% of Ethereum validators with data in just three days," the article says.
The methodology was developed by observing the Ethereum attestation mechanism, which divides validators into 64 committees, appoints certain node operators as attestation aggregators, and organizes them into subnets.
Each node subscribes to two subnets and communicates with at least one participant. This allows researchers to monitor aggregator messages and de-anonymize nodes.
"By deploying our registration client on four nodes within three days, we were able to de-anonymize more than 15% of Ethereum validators on the P2P network. […] If we run more nodes and conduct the analysis longer, we assume that the figure will increase", the article says.
Source
