VZ Bad Behavior


Eli Van Zoeren

3rd Party (Free)

903 downloads (last 90 days)

GNU General Public License v3

EE Version Support

  • ExpressionEngine 2
  • ExpressionEngine 3
  • ExpressionEngine 4


If an item is crossed out, it might be untested, not applicable or incompatible. Contact the developer to be sure.

  • Updater
  • Multi Site Manager
  • Stand Alone Entry Form
  • Low Variables
  • Content Elements
  • Better Workflow
  • Matrix
  • Grid
  • Webservice
  • Publisher


  • jQuery for the Control Panel

Add-On Type(s)



Uses the open-source Bad Behavior script to block potential spammers, not only from submitting forms, but from even seeing your website.

Bad Behavior is a popular, open-source spam prevention library. Rather than intercepting form submissions (like Akismet, Captcha, or the various honeypot scripts), it blocks known or suspected spammers from even viewing your website. In most cases, you will do well to run an additional spam filter - such as Low NoSpam - to catch the spammers that make it through Bad Behavior’s filters.

Generally, you can just upload and activate the extension to be protected from most comment, SAEF, & forum spam, as well as email address harvesters. There are settings you can tweak to fine-tune the way Bad Behavior works, but doing so is not necessary.

Optionally, it will also check requests against Project Honey Pot’s http:BL, a blacklist of known spammers. To use that feature, you will need to sign up for an API key.

The extension settings page also displays detailed logs for the past week (which is as long as Bad Behavior stores log data). This can be useful in resolving false-positives.


Download and unzip the extension. Upload the “vz_bad_behavior” folder to your third_party folder. Finally, enable the extension in your control panel. There are some settings you can use to fine-tune the script, but generally it will work well out of the box.

Download VZ Bad Behavior

EE Support Downloads Add-On Version Release Date
2.6.0+ Download 2.0.2 Apr 20, 2017
3.0.0+ Download 2.1.0 Jun 11, 2018

Hooks Used

If the add-on is an extension, and ties into ExpressionEngine's core files, it will use ExpressionEngine hooks. We are listing any hooks the add-on uses for developers to have an easier time locating other add-ons that they can reference for their own work.

  1. sessions_start

This entry was created June 9, 2011, 9:56 am.
This entry was last updated June 11, 2018, 8:58 pm.

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4 Reviews:

stefanos 06.12.18

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Excellent and very efficient script to block spams.

Thanks for your great work !

Kenny Stocker 01.22.14

Kenny Stocker
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If using the sage payment gateway with Cartthrob you will have to add the path to extload.php to your Whitelisted URIs otherwise you will get the error - Unable to redirect to Vendor’s web site. The Vendor failed to provide a RedirectionURL.

Jules6120 08.09.13

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Brilliant - A site with a few hard coded forms was getting lots of Spam - this stopped the Spam immediately! Added the Project Honey Pot API key. Great stuff.

angie 01.19.12

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Just installed this for a client having consistent comment spam on their site. Within minutes it had already caught a naughty little spammer. Excellent add-on!