VPNs – Virtual Private Networks
What is a VPN?
A VPN (virtual private network) is a benign technology that allows users access the internet through another’s internet connection or IP address.
Though using a VPN is not generally considered a criminal activity, device farms (also called click farms and phone farms) often use VPNs to hide their real locations. While many IP blacklists contain records of known “anonymous IP addresses”, savvy device farmers use premium or proprietary solutions to access fresh IP addresses, hiding their fraudulent activity.