Jackals build automated bots and spiders to crawl through the world wide web looking for vulnerable email addresses to add to their spam lists. Genera
This plugin adds a security question to the Buddypress registration page.
This plugin protects your registered user base by preventing registration with a disposable email addresse (like the ones provided by mailinator).
Just ajax contact form with captcha, one shortcode and easy to use, without options and without complexity.
Vuukle is a free comments plugin that acts as an analytics tool, we have many plugins like star ratings, emoticons, trending stories etc.
This plugin prevents comments spamming using language verification.
Add Hashcash spam protection to Contact Form 7.
Scientifically proven by research from the University of Wollongong as the most secure text-based 3D CAPTCHA available -- on the most simple settings.
Easy to use WordPress plugin to insert any Ads to your posts and BuddyPress sections.
This plugin will make your blog more secure by adding rules which spambots will not pass.
Adds Google’s No CAPTCHA reCAPTCHA to bbPress forms.
Automatically scatters invisible links to Project Honey Pot spam traps throughout your wordpress blog to help catch and stop spammers.
SPAM Protection and Anti SPAM against comments, registrations and login. Content protection for your website.
Zero Spam makes blocking spam comments and registrations easy.
Safe Signup Form is a WordPress Plugin that will forward a form submission to an email address, while preventing most automated attacks.
A simple yet effective Spam Filter. A Widget and Shortcode to display Comments with Good Karma as Testimonials. Plus the ability to Move comments and
Fancy Captcha is a jQuery plugin that helps you protect your web pages from bots and spammers. 通过拖动解锁来实现评论验证。
Enigma encrypts text on demand and decrypts it on client to avoid your email address and any other sensitive content caught robots.
A simple comment captcha protection.
DNS-anti-spam is a plugin to protect your weblog from spam-comment. It checks the IP address the comment is posted from against a few blacklists, and
3D objects-based CAPTCHA to get rid of spam in comments.
A lightweight Formidable Pro anti-spam add-on that requires no interaction with the user.
The Add new recaptcha google plugin allows you to implement a super security REcaptcha form into web forms.
Unspam makes it harder for spammers to automatedly send spam to your blog by changing the names of the fields in the comment forms.
SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.
Integrates Picatcha image-identification CAPTCHA - anti-spam solution with WordPress including comment and registration.
Block comment spam in WordPress with this plugin. Verify comments automatically with the SpamLytics API, and prevent comment spam. No captcha.
This plugin adds a new form of captcha to your Buddy Press registration and comment forms. Use this plugin to prevent bots from spamming your website
Bloquea el spam de todo tipo de robots con un captcha que es invisible para los usuarios de tu web o blog.