Spam on gdo/nz

Three different user accounts have successfully published spam on the New Zealand group on Groups.drupal.org: https://groups.drupal.org/node/450703.

One of those user accounts appears to have been blocked: https://groups.drupal.org/user/2892788

The other two are still active. Both have zero posts on www.drupal.org, so perhaps have been active on gdo only. One has been active for 2 months: https://www.drupal.org/user/3124849/track

The other for just 5 hours: https://www.drupal.org/user/3169753

All three accounts appear to be created for spamming only.