How Do You Protect Your Forum From Spam at Scale?

Maya

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Spam kills engagement and credibility. Do you rely on automated filters, CAPTCHA, manual moderation, or AI-powered solutions? Which combination works best without turning away legitimate users? Have you noticed certain platforms handle spam better than others?
 
I just have a simple Q&A spam prevention set up on my forum. So far I've only had one salmon bot but they were easy to remove.
 
Cloudflare as my firewall, and then spam prevention enabled with IPS prevention enabled with an active license.
 
I just use a single custom Q&A and 24 hour monitoring. The Q&A stops most spammers from registering and the little that does get though is usually dealt with by moderation within a few minutes.

On the forums that I manage on behalf of corporate organizations new registrations are manually approved which results in zero spam.
 
A few things:

1. I now require admin approval. I don't get as many new members where this is a problem. This is one of the best ways to detect and stop spam before it impacts your forum.

2. I still use a spam security question to further reduce spammers.

3. I ask a required question of why they want to join the forum. Spammers usually put in a few random letters. That makes it easy for me to Spam Block them quickly.

4. I add a lot of gTLD email domains (i.e. .club, .xyz, etc.) to blocked email addresses to help mitigate spammers.

5. I enabled Stop Forum Spam and Project Honeypot.

So far, these methods are keeping me at a 0% spammer rate.
 
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