> Not to mention their free tier doesn’t cover the complex DDOS attacks that you really should be concerned about This wasn't true in 2016 and isn't true in 2019 either. Whilst the system was named and blogged about in Sep 2017 https://blog.cloudflare.com/meet-gatebot-a-bot-that-allows-u... the internal repo has the first working code drop in Feb 2015. The (D)DoS protection systems and team, which I am the Engineerin…
If it is not IP/country, then what would cause this user to be prompted for captcha repeatedly?