CFv4 Anti-spam

How to add a custom ReCaptcha theme

Published on May 13, 2014 14:09

The Google ReCaptcha allows you to add a Custom Theme and the dropdown in the ChronoForms v4 Load ReCaptcha action has a custom option. But how can you actually add the theme. Here's how I did it for one client.

Can I use ReCaptcha in another language?

Published on Oct 8, 2013 09:45

ReCaptcha is the widely used anti-spam tool from Google; you can use it in ChronoForms with the Load ReCaptcha and Check ReCaptcha actions. By default ReCaptcha only supports a small number of languages. But with a simple code hack you can add another one. Here's how I built a Welsh version.

How can I bypass a Captcha or Anti-Spam check?

Published on Aug 18, 2013 07:34

Anti-Spam checks can be really useful in reducing spam submissions to your forms - but they also get in the way of genuine users. Most users will tolerate them once, but if you ask them to re-submit a captcha in the same session they may get upset and go. Here is one way to avoid a repeat spam check.

Why does Joomla! Cache stop my form working?

Published on Jun 15, 2013 04:41

Joomla! includes a built in basic caching system that can help make page loads faster by storing a copy of the finished page and serving that instead of rebuilding the page each time it is requested. The problem with using the Joomla! cache is that it will break some important features in ChronoForms . . .

How can I block specific IP addresses?

Published on May 8, 2013 08:22

We have seen some cases where there are regular 'spam' emails from the same IP address. Usually these aren't really spam but are the result of a anti-hack scanner or a web-bot scanning the site and testing all the URLs they find - including the action URL of your form. This FAQ has some simple code to block all submissions from those IP addresses.

How can I stop spam from my form?

Published on Mar 18, 2013 13:54

Spam form submissions are a fact of life and we all have to deal with them as best we can. Unfortunately some of the most persisitent spammers are also very skilful at avoiding blocks that we put in their way and there is a continuing battle of wits.

The Captcha image is too small

Published on Jan 24, 2013 10:16

How can I add a ChronoForms Captcha to my custom HTML?

Published on Dec 31, 2012 05:02

The ChronoForms Captcha is a convenient anti-spam check that can be added simply in the Wizard. If your CFv4 form does not use the Wizard then you still add a Captcha by including the following HTML.

How can I add a HoneyPot spam check?

Published on Nov 21, 2012 08:45

There are several ways of protecting web forms from spam; one of these is the HoneyPot input - that's a form input that isn't visible to a human user but will probably be seen and completed by a spam bot. So if there is a value in the input the form is probably spam. This FAQ tells you how to set up a HoneyPot input.

The Captcha image doesn't show

Published on Oct 11, 2012 05:13

This FAQ has some suggestions to try if you have added a Captcha element to your form with the Load Captcha and Check Captcha actions but the image is not displaying.