Thread:Project:Support desk/Upgraded to 1.23.5, massive spam/reply

When you have spam although you are using the QuestyCaptcha, this means that the spammers are able to correctly answer your questions. Change the questions (spam bots remember answers, which have previously proven to be correct) and maybe make them more difficult for a computer to guess. You might also want to use questions, which the average user will not be able to answer easily, but which is well known in your community.

You can block spammers and remove all their contributions with an extension like Extension:BlockAndNuke.