I work for IPinfo, where we provide a VPN detection service. Some people think that our VPN detection service restricts access to various services through a VPN. However, if someone is paying for their internet and then chooses to pay an additional $15-$20 a month for a VPN service, it is likely to be a source of good traffic.
From the point of Facebook, I think they use SMS verification and their app also requires location permission. Facebook is pretty good at preventing bad signups. What they need to do is invest that effort in keeping their user base safe.
From the point of Facebook, I think they use SMS verification and their app also requires location permission. Facebook is pretty good at preventing bad signups. What they need to do is invest that effort in keeping their user base safe.