<ul><li>Blockchain nodes communicate over a peer-to-peer (P2P) network, with researchers exploring decentralization properties.</li><li>Network topology is crucial in terms of clustering properties and maintaining safety and liveness.</li><li>Ledger systems must maintain connections to avoid eclipse attacks and ensure network partition tolerance.</li><li>An attacker can compromise safety and privacy by isolating nodes in the network and controlling communications.</li><li>Bootstrapping nodes need to connect to honest peers to avoid compromising system properties and privacy.</li><li>Connecting to honest peers poses challenges due to the lack of knowledge about network participants.</li><li>Catching up from genesis may not always be feasible, leading to potential safety violations in PoS systems.</li><li>Maintaining network privacy and ensuring liveness are ongoing challenges in decentralized ledger systems.</li><li>Some proposals aim to enhance privacy and security using computational assumptions rather than trusted setups.</li></ul>

Eclipse Attacks, Network Clusters & DNS Seeding

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