Anti-Captcha is a transparent spam solution that does not require any end-user interaction.
It is based on a nonce key, which is dynamically inserted using randomly generated (and obfuscated) javascript.
The aim of this plugin is to prevent automated attacks (by bots) on the following WordPress actions:
- Posting comments
- Registering for a new account
- Requesting a lost password
When a comment is posted without a valid Anti-Captcha token, it shall be instantly marked as spam. This way, you can always manually approve this comment in hindsight if it appeared to be sincere.
BotBlocker
Since the vast majority of WordPress spam is automated in nature, the goal of BotBlocker is to block comment spam bots and not hinder users. This is accomplished through the use of honeypot technology, which tricks the spambot into identifying itself by performing actions that a human could not.
Bo.........
Ironclad CAPTCHA WP plugin
With this plugin you can easily install and use Ironclad CAPTCHA in your WordPress blog. 3D captcha renders several intersecting colored and rotated objects and asks user to count objects of some type. Humans can easily do it (much easier than read twisted text) and bots can't do it at all and never.........
Hidden captcha
El hidden captcha es un plugin anti-spam que permite bloquear a los robots que pretenden incluir spam en nuestra web o blog de forma abusiva y descontrolada.
Con este plugin los usuarios no tendrán que rellenar ningún tipo de captcha, ya que para ellos el captcha se hace invisible, sie.........
Kama SpamBlock
Block auto-spam when spam comment is posted. Absolutely invisible for users. There is no any captcha code. Pings and trackbacks cheks for real backlink.
It's very simple and effective plugin. It's option to install Kama Spamblock even if you have external comment system like "Disqus", because autos.........
Ban Subdomain Emails
A lot of registration spam comes from emails with a subdomain. Spammers control a domain such as buymyjunk.com and then attempt to register on your site with emails such as irenemwd@foster2.buymyjunk.com and jakemgm@foster7.buymyjunk.com. This plugin simply blocks all registrations using a subdomain.........
minteye
minteye allows you to add CAPTCHA boxes for spam prevention, Unique No typing Sliding CAPTCHA
With easy integration of minteye Sliding CAPTCHA, monetize your CAPTCHA and increase the success rate while reduce your site bounce rate. Smart, quick and user friendly.
Sign up now in order to get your a.........
WP-SpamShield Anti-Spam
An exceptionally powerful and user-friendly WordPress anti-spam plugin that eliminates comment spam, trackback spam, contact form spam & registration spam....
Google Captcha (reCAPTCHA) by BestWebSoft
Google Captcha (reCAPTCHA) plugin allows you to implement a super security Captcha into web forms. Google Captcha (reCAPTCHA) is a free CAPTCHA service that helps to digitize books, newspapers older radio shows.
This plugin can be used for login, registration, password recovery, comments forms.
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Anti-Spam by CleanTalk - No Captcha, no comments & registrations spam
No CAPTCHA, no questions, no counting animals, no puzzles, no math and no spam bots....
SiteBrains Interactive Spam Blocker
Block spam using state of the art client-side form validation. SiteBrains plug-in displays themed notifications to your users as they type.
Our analysis is signed using a secret key unique to your domain.
The signed analysis is submitted in a hidden field along with the rest of the form fields.
This.........
