PhpBB is a great forum software and it’s free. Due to that extremely many people uses it as their forum software. And because of that spam bots loves phpBB forums. And that is one of the biggest downside with phpBB. But here is two solutions that will fix this problem and completely get rid of those annoying spam bots. I have tested them myself for a few weeks and they are bullet-proof when it comes to stopping spam bots.

Registration Auth Code (RAC)
This phpBB mod ask the visitor to enter an Authorization Code when they register. The Authorization Code can be found on a forum post or somewhere else on your forum. You can see this mod live on the AdBrite Forum.

Download Registration Auth Code (RAC) here.

Easy BotStopper
This MOD works by making website field invisible during registration. Spam bot that uses auto-registration script which provides an website URL will be detected and stopped.

Download Easy BotStopper here.

Don’t forget to join ForumPostie where you can meet other forum owners!