Existing features to block abusing users or to detect good/bad buzz?

Hi everybody.
I have been using Matomo for two years and I am very satisfied. I handle about 1 million visits per month for 6 million pages viewed without any problems and with very good performance (in terms of speed). The purpose of this thread is to ask if the following features already exist:

  • Is there a plugin that automatically allows to write a “Deny from” in the htaccess for ip exceeding a certain number of actions over a certain period?
  • Is there a plugin that can detect a buzz (bad or good) by examining every hour a surplus of activity compared to the same time the day before ?
    Thanks for your help.

I think you could use fail2ban to do that, you need to write your own rules.