1. A method of locating a prefix hijacker within a one-hop neighborhood, the method comprising: generating, using a computing system, one-hop neighborhoods from autonomous system-level paths to a destination prefix, the autonomous system-level paths associated with a plurality of monitors, each of the one-hop neighborhoods including autonomous system identifiers that are in an autonomous system-level path and autonomous system-level identifiers that are within one-hop of the autonomous system identifiers in the autonomous system-level path; determining, using the computing system, a suspect set of autonomous system identifiers resulting from a union of the one-hop neighborhoods; calculating, using the computing system, a count and a distance associated with each autonomous system identifier in the suspect set of autonomous system identifiers, the count representing how often an autonomous system identifier appears in the one-hop neighborhoods, the distance representing a total number of autonomous system identifiers from the autonomous system identifier to autonomous system identifiers associated with the plurality of monitors; and generating, using the computing system, a one-hop suspect set including autonomous system identifiers in the suspect set that have a greatest sum of the count and the distance.