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.
IPBlock offers powerful protection against bruteforce login attacks. Works in 2 modes, allowing you to set your own blocking scheme.
A true Web Application Firewall.
Allows users to send email messages to each other as long as they know their usernames.
BruteProtect is a cloud-powered Brute Force attack prevention plugin and the best protection against botnet attacks.
Protect your site from automated logins efficiently!
Prevent unauthorized access to your admin login.
This plugin blocks distributed botnet brute-force attacks on your WordPress installation.