Sniper: Social-Link Defense for Network Coordinate Systems

Recent work on securing the Network Coordinate (NC) service attempts to defend attacks based on nodes´ past behavior and activities. They detect malicious nodes only after attacks occurred. In order to secure NC system before malicious nodes mount attacks, we propose a social-link defense system for NC service-Sniper. We are able to provide NC system with trusted neighbors (landmarks) using social-link filtering technique. Our preliminary results demonstrate that Sniper can protect NC system successfully before they are attacked by malicious nodes.