On our wiki, there are categories being spammed (such as making categores called "A", "B", etc. on a lot of the pages) however the logs for that page only show the deletion of such categories, not the creation, thus we do not know who is doing this.
Is there a way to prevent this? Furthermore, can the creation of categories be restricted? Category deletion will likely result in recreation of the spam categories.
Well, according to the logs on that page, there was on user that added those categories two years ago, and then another user, maybe the same person, back in June, and it was just recently removed two days ago. Is that what you're referring to?
Ideally you should have a community consensus already such as via forum or blog post with overall view of implementing abuse filter, then go to Special:Contact/general on your wiki.
However to just accomplish the task you describe, it may not be enabled for that reason - abuse filter is usually enabled on wikis with lots of daily edits, even more so on wikis with a history of vandalism.
The user seemed to be quite bored: Added 96 characters to a page, and then removed just a single one in each of the 96 following edits. How stupid is that? I probably would have run out of patience after 5 edits or so. :-)
Fandyllic wrote: It looks like that user is running a bot.
Ah, that might explain the great patience in removing single charecters in 96 edits. Programming such a bot seems to be quite a creative task. I have no clue, how to do this. (I mean besides of not wanting it).
neither. It is just the software automatically limits anyone who makes really fast edits. Despite that, I earned a 24 hour block for being a careless with my edits when I decided to add a ton of info at once.