Ban users who are suspected of cheating the registrations system

[omfj]

It should be able to ban users who we suspect are cheating the registration system with tools such as bots. It should just be a boolean flag on the users, and if it is set to true, the registration should flat out fail no questions asked.

This is to prevent and discourage people from cheating.

There should also be some rate limiter that checks all requests before the registration start and flags the user.

Other alternatives can be that flagged users' registrations are throttled meaning that they take artificially longer to complete so that they don't have any advantage, but can still participate.