Stranger VPNs: Investigating the Geo-Unblocking Capabilities of Commercial VPN Providers. - Etienne Khan; Anna Sperotto; Jeroen van der Ham; Roland van Rijswijk-Deij (PAM, 2023)

A First Look at User-Installed Residential Proxies From a Network Operator's Perspective. - Etienne Khan; Elisa Chiapponi; Martijn Verkleij; Anna Sperotto; Roland van Rijswijk-Deij; Jeroen van der Ham-de Vos (CNSM, 2024)