Multipot got a small update concerning Drupal. Since all request made to Multipot are captured and stored in the database anyway, this update only affects the analysis features.
Drupal 8 vs Drupal 6, 7
There are some routing differences between the Drupal versions 6, 7 and Drupal 8. For example the user login routes changed between the versions:
Drupal 6 and 7: http://yourdomain.com/?q=user
Drupal 8: https://yourdomain.com/user/login
As of now, the update to Multipot only counts password guesses made to Drupal 8:
Have look at the Multipot GitHub project for the source code. For further information have a look at the Multipot release blog post.