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CB AntiSpam (6.1.0)

Protect your site from harmful spam and intrusive bots with 10 different customizable captcha modes, simple honeypots, and form timers. With built in spam protection features like duplicate login protection, login sharing protection, duplicate registration protection, access logging, and more you can keep your site safe!
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custom code based captcha

Protection

Out of the box protection to stop spam in its tracks and help protect your site from harmful bots.

Customizable

Dozens of options to tailor specifically to your sites needs helps combat bots with the power of uniqueness.

Community

Join a community that is ever growing and help change the future of CB AntiSpam with your own ideas!
captcha modes

Captcha

With 10 built in captcha modes and support for Joomla captcha plugins there's unlimited options are your finger tips to help combat spam. A custom tailored captcha mode offers personalized captcha protection unique to your site making it that much harder for bots to bypass!

code captcha mode

Internal

Internal captcha modes include support for custom randomly generated codes, multi-lingual customizable question based captcha, and random math based captcha. Code based captcha includes support for highly accessible audio based captcha as well!

recaptcha v2

reCaptcha

Google reCaptcha v2 and v3 are completely supported including all of their modes. This means reCaptcha checkbox, invisible, score, and more! You've complete control over all the the reCaptcha display settings allowing for easy customization.

hcaptcha

hCaptcha

This privacy focused captcha can help escape the eyes of Google, but still provide powerful spam protection. With a robust set of privacy focused tools you can monitor your sites captcha activity with peace of mind.

cloudflare turnstile

Cloudflare Turnstile

This captcha provides unmatched privacy with full GDPR compliance. Stay a step ahead of spam by leveraging powerful Cloudflare spam protection features.

All captcha modes also support Honeypot and Timer form protection. Honeypot provides a powerful trap to stop bots in their tracks while Timer form protection prevents pesky bots from instantly submitting forms!

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Documentation Memberships

Blocking

Built in functionality for blocking by a wide range of options. This includes permitting ignoring blocking by this same range of options. CB AntiSpam also provides detailed Attempts tracking to keep track of failed login attempts, failed captchas, and more!

block options

Abuse Protection

Stop unwanted registrations in their tracks with market tested ip protection services. Includes support for both AbuseIPDB and CrowdSecCTI IP address report processing to prevent registrations from malicious ip addresses that wish to do your community harm! Provides full access to abuse reports and automatic blocking of registrations.

abuse configuration

Management

With a complete set of frontend and backend management pages you can customize your spam protection to be as light or strict as needed. From configuring automated blocks, blocking duplicate logins, to adjusting fine details of your captcha and more! It's time to put spam in the past and protect your site!

block management
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FAQ

Yes, included is a Joomla captcha plugin for outputting and validating CB AntiSpam captcha allowing usage throughout Joomla.

Yes, both can be toggled on and while not recommended as it causes login friction for your users it is supported.

Yes, a very simple API is available for inserting attempts and logging behavior in addition to blocking. This all also integrates with CB Auto Actions making it much easier to act on Joomla events to provide custom attempt and access logging.

Yes, a plugin is included to protect against a common Kunena attack vector, which is link spamming. This can help eliminate forum spam entirely and includes support for auto blocking in the event of abuse.

Maybe, we are open to implementing as many actively developed captcha modes as possible. As long as they maintain active development and provide an API documentation in English we would be happy to take a look.

This can be difficult to answer. Some spam will possibly get through as bots are constantly changing their tractics. CB AntiSpam aims to block as many as possible, but in the world of AI it is getting more difficult. Ideally it's important to have strong server side security measures in place in addition to CB AntiSpam. You can use block rules for example to try and stop abusive API ranges or email domains.

Open Source

Everything you download from Joomapolis - whether free or paid - is GPL v2 licensed. This means that you can install it on all your websites and use it forever. Learn more about your GPL v2 privileges.