Eclipse Attack Vector

An eclipse attack is a malicious strategy where an attacker isolates a specific node from the rest of the network by controlling all of its peer connections. Once isolated, the node only receives information from the attacker, who can then feed it false data about the state of the blockchain.

This allows the attacker to trick the victim into accepting invalid transactions, double-spending funds, or delaying the victim's transactions. This attack is particularly dangerous for financial nodes that rely on real-time data to manage risk, such as those powering derivative liquidations.

Protecting against eclipse attacks requires robust peer discovery mechanisms that ensure nodes connect to a diverse and randomly selected set of peers, making it computationally expensive and difficult for an attacker to control all incoming and outgoing connections.