Topic on User talk:Jurjendevries
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Jurjendevries, I've just had another look at the QuestyCaptcha module of the ConfirmEdit core extension, and it looks like that can be configured with your supplied challenge questions. As Reception123 is also a system administrator, he could assist you with doing the GitHub pull request(s) to configure this for your wiki. I'm not sure if we have any wikis using QuestyCaptcha, but we may.