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CB Captcha Plugin Extension Specific Addon

This Community Builder plugin produces a captcha image and a security field along with verification logic. This security feature can be included (via plugin parameter settings) in one or more of the following CB processes: registration process, forgotten password process and email user process. A number of parameter settings are available to customize the captcha image. A must have plugin to protect against spambots!

Requirements: CB 1.0.2 or better; PHP 4/5 with GD and FreeType libraries
Known Issue: Sites with JSMF component from Joomlahacks must go to SMF Admin ==> Server Settings ==> Feature Configuration and disable: Use database driven sessions.

Update: Version 2 of this Captcha plugin (installable only on CB 1.1 websites) is available for documentation subscribers on Joomlapolis. New features include: audio playback, hooks for CB Login and CB Contacts, does not break from garbage in template or language files.

Update: Version 2.2 RC4 available for CB documentation subscribers (added security and Joomla 1.5 native compatibility)

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Editor's Note
  • This extension requires registration to download.
Images
bypowwowtime on November 15, 2009
Our site has been using this plugin for several months and it is nearly eliminated spambot registrations. "Nearly" because a very rare few spammers do sit there and manually register, but CAPTCHA is the cat's meow for keeping the vast majority away. Please note that the version in the free downloads, according to our experience, requires Legacy Mode; there is an update for CB Documentation Subscribers (recommended) that runs in full Native Mode. As an alternative, the CB ReCaptcha plugin also in the JED is less customizable and requires registration for public/private keys (free at this time), but is Native Mode compatible.
byJadzia on September 25, 2009
Excellent plugin however users should note that you now have to subscribe to Joomlapolis to download the plugin.
Before I installed this plugin for CB, I spent 15 minutes every morning blocking spambot IP addresses from accessing my Web site.

No More SpamBots!!! yay! Now I can focus on defending against hackers and real human spammers and not waste time on the cumbersome SpamBots.

Thanks!
This has been working great with my j1.0.15 but got problem when i install it with my j1.5.10. This only work in j1.5.10 legacy mode.
Owner's reply

As stated:

Update: Version 2.2 RC4 available for CB documentation subscribers (added security and Joomla 1.5 native compatibility)

byZucca on July 7, 2009
A great plugin for CB, but I can't manage to make it work in Joomla 1.5 Native mode (seems to work only in Legacy). I hope joomlapolis won't withdraw the development of this plugin!
byscrappy on July 8, 2008
It works beautifully with my Joomla 1.0.15 and CB 1.1!
byjazzking2001 on April 11, 2008
This stopped all of the spam bots that i was getting.
Thanks
bywxman on September 4, 2007
I'm using CB 1.1 and Joomla 1.0.13. The plugin installed without any problems on the first try. I also like the feature that lets you pick the look of the font in the captcha.
byTheFlyingKiwi on September 3, 2007
This is a great extension. Simple to install - no complications at all. I used to get several automated registrations per day - none now. It should be considered an essential security item for anyone running CB!!
I am very glad to see such a good plugin for CB. This is a real must for all those want to build a strong community with Joomla.
byasciikerr on May 14, 2007
I really enjoy the simple installs that require little to no effort, SWEET! Give it a whirl, you might just like it...
byiosoft on May 13, 2007
Initially the plug-in didn't worked on my Joomla 1.0.11.
I upgraded to Joomla 1.0.12 and by the help of Nant, it WORKED !!!

10000 of thanks to Nant for his personal touch.

The plug-in is so beautifully build, that using some small mods (available at JoomlaPolis forum) this captcha system can be used in anywhere within Joomla.
Owner's reply

Version 2 of this plugin has been released for CB documentation subscribers. Version 2 has audio playback functionality and is also immune to garbage characters in language files or joomla template.

and works flawlessly out of the box. thanks!
byLarae on March 5, 2007
Installation is very easy and works right away. Great anti-spam solution for registration.
bysamerkamal on February 21, 2007
a necessity and really easy to install. makes your community looks more pro. Just remember to unzip the first file before uploading and installing it.
bybikingforbreakfast on February 18, 2007
This is a first for me: not being able to get a CB plugin to work. I have been anxiously awaiting this plugin and reading the other posts, it seemed to be what I was waiting for.

Unfortunately, I have downloaded and installed, and I have no image (just a space for an image). Although other reviews state it worked for them "out of the box," I've so far opened two boxes and it doesn't feel much like Christmas. That being said, I'm sure it is something I'm doing incorrect -- the CB Team are incredible!!
Owner's reply

Version 2 of this plugin is immune to garbage in language or template files. Downloadable for CB documentation subscribers from Joomlapolis.

bydsendecki on February 15, 2007
Looks great, installed flawlessly -- no spam registrations since I installed it. Used to get 5-6/day!

Thanks Nick and Beat -- a great little Valentine's day gift!
Owner's reply

You are welcome!
Thank you for helping out on the Joomlapolis forums!!!

byleolam on February 15, 2007
Better late than never but we have a captcha option on the registration. It works both in Joomla 1.0.11 and 1.0.12 very well with 1.0.2. Note it does not work with earlier versions of CB but that is logical and no objection. Any person should update anyhow to 1.0.2.

pro: works in register & password & email
con: no refresh button/ no disability (announced next release)

still missing: Captcha on login module

with refresh and module captcha i would rate good. Add than disability you get excellent.

one hurdle taken though!

leolam
Owner's reply

Captcha on login module?
I think this would be an overkill and not user friendly. Even without the refresh feature (which would require AJAX and thus be unfriendly for accessibility) if you fail to get the security code the first time, then the application form is presented again with a new code and all (but the password) fields are kept intact.

byschw32m on February 15, 2007
Worked right out of the box.. just what I wanted something that would add an extra security feature in registrations.

Thanks Guys
byDaryl on February 15, 2007
Hi,

I have tried it out and installed the plugin
on several sites. It is an excellent tool to
help battle the bot spam! It works without
issues, just remember to publish it and install
it in your CB plugins manager area.

Thank You!