Detect spam users and automatically kick them

[3fr61n]

Hi...

In public chat everybody can join, and in case of spam, send suspicious links or try to get information from users.

It would be nice to find a way to detect those spammer and as soon they join the channel, send some kind of 'welcoming/challenge' to detect if they are really humans or just bots, then in case of a bot, automatically kick them.

Thanks!!!