The ability to mark specific users as spammers like on Multisite install.
Block users using blacklists domain from registering to your WordPress site.
Complete and Easy-To-Use WordPress Security. Unrestricted Access. No Premium Features.
Blacklist IP Addresses from visiting your WordPress website and Usernames from spamming. View details of all failed login attempts.
Block Bad Queries (BBQ) helps protect WordPress against malicious URL requests.
Block visitors from countries you don't want on your website. Based on which country your visitor is from.
Gatekeeper allows administrators to take a WordPress site offline while leaving it accessible to authorized users for maintenance, testing, etc.
Automatic updating of the comment blacklist in WordPress with antispam keys from GitHub.
To protect your Blog from automated spambots, this plugin adds invisible formfields to your comment form.
Project URL: https://tornevall.net/forum/project.php?12-Wordpress-DNSBL Tornevall Networks DNS Blacklist support for WordPress
Prevent User Registration Spam, and Track New User IP address
The plugin Limit Attempts allows you to limit rate of login attempts by the ip, and create whitelist and blacklist.
The increase in efficiency of management of a comment blacklist is attained, and a spam comment is blocked.
Improves the security of the login page against brute-force attacks. Records every attempts to login. Easily block an IP address.
WP-BlackCheck is an Anti-Spam Solution for WordPress blocking spam using local detection and a centralized Blacklist Service.
Allow users to edit comments for a limited time, while admins can edit all comments.
Remotely add known terms into the WordPress blacklist keys to manage spam
WP Anti Spam can anti automated spambots or anti spams by"comment","ip","name","email","url".
The AVH First Defense Against Spam plugin gives you the ability to block spammers before any content is served.
Power up your WordPress site by blocking visitors ip address.
Todd Lahman's comment spam blocking plugin that blocks automated spam with zero false positives.
Restricts registration to email addresses listed within the options file. Assumes WP native registration is turned off.
This plugin will make your blog more secure by adding rules which spambots will not pass.
WangGuard Blacklisted Words is an Add-on for WangGuard plugin. You can blacklist words.
Add-on plugin for gravity forms allowing you to specify email domains that will throw a validation error blocking them from submitting the form.
Extend Visitor Maps and Who's Online with extra features, such as IP and referer banning. Display the referring host name and search string.
CloudFlare Threat Management allows you to manage all banning, unbanning, and clearing of IP addresses across your entire CloudFlare account.
Ban visitors from certain sites from viewing or adding comments.
A plugin to understand SpamDyke 's error codes
Monitor and display registered users activity (logins, posts, comments, etc.). You can also track and prevent hackering attemps, with IP blacklisting.