Allow custom actions if a spam user is captured

[benzend]

Is your feature request related to a problem? Please describe.
Trying to see if we're capturing spammers, since there doesn't seem to be a way to see if anyone is being captured through the form.

Describe the solution you'd like
The ability to override a method, or something of the sort. Something like:

class MyController
  prepend_before_action :protect_from_spam

  def after_spammer_detected
     # do some metric capturing or logging
  end
end

Describe alternatives you've considered

Additional context