After configuring a basic setup and putting the WP-site online, I noticed an increased amount of traffic. It would seem that the domain is still a valid target to spamming. The standard solution for WP-sites is Akismet, which was already in use, but as far as I know it targets only the comments.
The problem we were having was that there was a small avalanche of fake users trying to register and then go rampant on the BuddyPress part of the website and the blog itself.
Looking for a solution I came across a plugin called WangGuard and decided to have a go at it. So far I’m inclined to say that it does exactly what it claims to do: just put a stop to sploggers or spam users.
For those interested, the link to the WangGuard website.
The plugin can be installed through the admin panel as any other plugin. You might need to register on the website to obtain an api-key