While creating new campaigns, you will be asked to select the preferred Targeting options. In this section, you will come across multiple choices, including Proxy Traffic Type.
Proxy Traffic Type targeting feature allows you to narrow down your targeted audience by choosing or excluding Proxy traffic - page visitors using a VPN.
You can now select or exclude people who are using VPN to really focus on specific GEOs that you want to target.
NOTE: Please note, that if you do not select anything from the targeting options, you will by default, target both VPN and non-VPN traffic.