Fun fact: I once interviewed for a company offering a free VPN, which was actually using other users as endpoints for the VPN. Some kind of P2P VPN if you will.
How did they make money? Easy: there were also selling a botnet! So if you used their "free VPN", you could be part of a botnet for DDOS or to create fake reviews/upvotes from thousands of "legit" IP addresses.
How did they make money? Easy: there were also selling a botnet! So if you used their "free VPN", you could be part of a botnet for DDOS or to create fake reviews/upvotes from thousands of "legit" IP addresses.