Yesterday it was a face to face battle with spammers. They found the way to break into the forum. Nobody noticed it, because there is a filter that prevents posts before 5 posts are approved. But behind the lines, against the 5 or so usual registrations, there were about a 100 registrations. If the database increases everyday of 100 users, it will soon become unusable and the forum will experience again the old known issues. So, it was mandatory to intervene quickly.
After a few hours of work, I think we reached the most stable configuration ever. A new module was installed that far surpasses my old checks (which were abandoned). The module works like a charm, and in 12 hours it caught and purged about 200 fake accounts. If we continue at this pace, in a couple of months the database will be completely clean of spammers.
I attach a screenshot of a log where you can get an idea of the attacks we get daily, and how the new module works. You can even see that some people tried to register multiple times from the same IP address, after they realized they were caught. And they were caught again
So, end of spam, guys!