Take the guesswork out of WordPress security. iThemes Security offers 30+ ways to lock down WordPress in an easy-to-use WordPress security plugin.
An exceptionally powerful WordPress anti-spam plugin that eliminates comment spam, trackback spam, contact form spam & registration spam.
Spam protection plug-in, all-in-one, premium anti-spam. No comments spam & registrations spam, no email spam, protects any forms. Forget spam.
Ban users by IP, IP Range, host name, user agent and referrer url from visiting your WordPress's blog.
Limit rate of login attempts and block IP temporarily. It is protecting from brute force attacks. Login lockdown system.
The most advanced protection against sploggers and spam users registration, is fully WordPress,WordPress MU ,BuddyPress and bbPress 2.0 compatible
SpiderBlocker will block most common bots that consume bandwidth and slow down your server.
Prevent brute force logins on your WordPress site with Google's reCAPTCHA.
This plugin prevents users from commenting or viewing your website if a comment of theirs has been marked as spam.
Anti-Captcha is a transparent spam solution that does not require any end-user interaction.
This blocks semalt.com, buttons-for-website.com and others with a 403 Forbidden message so that they no longer show up in your Google Analytics stats.
Block Semalt from crawling your website.
Adds a Google No Captcha ReCaptcha checkbox to your WordPress login screen.
Protect WooCommerce login, registration and password reset form against spam using Google's No CAPTCHA reCAPTCHA.
This plugin allows WordPress to block over 95% of spam comments using a time-based hash.
Adds some extra security to your WordPress with only one click.
Simple question that blocks most spambots (and paid robots) by making them answer a common sense question
WordPress Security Plugin - Perform over 23 Basic Security Activities for your blog and get a free malware scan at the same time! See more details at
NURCaptcha inserts a reCAPTCHA on the Register Form of your site to protect it against spambots.
Protect your site against bad bots by trapping them in a virtual blackhole.
Stop the Spam bot as semalt and buttons-for-website that appear on Google Analytics and have real reports.
Replytocom Controller lets remove "?replytocom" from comment reply urls and redirect bots who try to use it anyway.
Simply uses the HTTP_REFERER to determine if it's from 'Semalt', and blocks it with a nice 403 "Unauthorized" response.
Tor Blocker stands for limiting actions to the users that came from Tor nodes, countries or cloud/hosting/vpn providers.
3D objects-based CAPTCHA to get rid of spam in comments.
SiteBrains blocks spam posts using a completely configurable set of rules. Both interactively as the user types and on our servers upon submission.
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.
Styled user management for login, register, user profile... - optional: user chosen passwords, e-mail validation, admin approval, reCaptcha and more