Wordfence - Comprehensive security plugin for WordPress.
Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
iThemes Security - Security plugin that provides over 30+ ways to secure and protect your WordPress site.
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.
NinjaFirewall (WP Edition) - A true Web Application Firewall to secure and protect WordPress.
OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...