Before revision: Recent studies have shown that some commercial VPNs leak user traffic to third parties. In this paper, we aim to understand how and why a population of VPN users---university students---chooses and uses VPNs, and whether they are aware of the security and privacy risks that VPNs pose.
After revision: We study how and why a population of VPN users---university students---chooses and uses VPNs, and whether they are aware of the security and privacy risks that VPNs pose.