Routing Attack
Web3 / wallets security
A routing attack is a network-level exploit where malicious actors intercept, manipulate, or redirect data packets traveling between nodes in a peer-to-peer blockchain network. By controlling network infrastructure or compromising routing protocols, attackers can partition the network, delay transaction propagation, or create eclipse attacks where they isolate target nodes from the honest network. These attacks undermine the distributed nature of blockchain systems by preventing legitimate communication between participants, potentially enabling double-spending or censorship of specific transactions. Example: In 2015, researchers demonstrated routing attacks against Bitcoin by intercepting BGP (Border Gateway Protocol) announcements, causing major exchanges and mining pools to become temporarily isolated from the network and creating transaction delays. Why it matters for crypto security: Routing attacks reveal vulnerabilities in blockchain's network layer that can compromise consensus integrity and transaction finality. Defending against them requires robust peer discovery mechanisms, encrypted communications, and geographic diversity of node infrastructure.
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