Thread:Project:Support desk/MEDIAWIKI was a poor choice and is used by SPAMMERS/reply (5)

This site?

I see you are using ConfirmEdit, but with SimpleCaptcha which is easily solvable by bots. Try the other available types, they may work better.

You're also using SpamBlacklist, which is good, but you haven't set up a blacklist yet. It should already be using Meta's blacklist by default, but not every site used for spamming is on the list. Whenever you see a site being spammed, add it to your blacklist.