Google reCAPTCHA

This module provides integration with Google reCAPTCHA service for protection site forms.
Read more: http://www.google.com/recaptcha
This new service from Google opens new epoch in spam protection technology.

Even if the site has no comment (or similar) form - it is still necessary to protect!
Why? Because CAPTCHA protects login form (Your site has it, right?) and not allow bad guys to brute-force and use vulnerability like this: https://www.drupal.org/node/2378367

Downloads

Spamfree Email

Admin Configuration page

Introduction

Image Math CAPTCHA

This module is an add-on for the CAPTCHA module to provide a mathematical equation challenge as a CAPTCHA. The question presented is an image instead of text to prevent auto-crawling and parsing via robots. Images are created on the fly much like the Image CAPTCHA module that comes with CAPTCHA.

** This module used Image CAPTCHA as a foundation and was modified from that. So all due credit to the creators of CAPTCHA for providing that starting point **

Downloads

Mail Tester

This is a simple module that uses the simplicity of www.mail-tester.com to help you improve the quality of your email system.

If you want to know more about Mail Tester, please check their FAQ.

Downloads

Node Watch

The Node Watch module provides a report of nodes on the system in order to provide alerts when that count changes based on a configurable threshold.

Anti Human Spam Module

This Module is created to counter human spam. Other than using CAPTCHA module, this module offers local content checks to prevent users copy and pasting content. It also filters by keyword and blocks or mark as spam. Lastly is the prevention of users submitting a number of posts in a period of time.

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