Jetpack - Jetpack offers SEO and security plugins for Wordpress.
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
WP User Manager - The most customizable profiles, community builder and membership WordPress plugin
Intruder - Intruder is a security monitoring platform for internet-facing systems.
Project Panorama - Project Panorama is an elegant and reliable WordPress manager plugin that comes with exciting features and tools that will allow managing your multiple WordPress sites with ease.
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.