A routing attack is when an attacker leverages vulnerabilities in the internet routing infrastructure to intercept data sent between nodes on the network. In a blockchain network, attackers leverage Border Gateway Protocol (BGP) routing to intercept traffic, partition networks, and even attempt double-spends as the system is designed to allow for this sort of manipulation. That is because BGP, a protocol designed with trust rather than verification in mind, makes routing attacks one of the most technically advanced attack vectors against decentralized networks today.