Hello. Confluence ships with an embedded Spam Prevention mechanism that enables admins to turn on captcha for comments on an open wiki, so when an anonymous user wants to post a comment, it must validate that it's not a bot via entering a captcha.
Even with captcha enabled we are getting a ton of Spam comments on our indexed pages. I suppose spam bots are having an easy time going through the standard captcha that Atlassian currently ships with Confluence.
Is there a way, a plugin perhaps, that allows using a different captcha implementation on comments?
I did not find an add-on that will apply a different captcha for anonymous comments.
As Nic points out in captcha bypassaed, the captcha mechanism in general is not the most bullet-proof.
Have you considered disabling anonymous comments or is that functionality necessary for your instance?
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