NinjaFirewall (WP+ Edition)
A true Web Application Firewall to protect and secure WordPress.
NinTechNet
Prevent Direct Access Gold
Protect unlimited WordPress files and all file types against unwanted users and the public
BWPS - Protect WordPress Files
Shield Security Pro
Powerful WordPress Site Security through Smarter Automation
One Dollar Plugin
ManageWP
ManageWP helps you be more productive and manage your websites efficiently with a set of powerful features.
ManageWP
iThemes Security Pro
Secure and Protect WordPress
iThemes