Wordfence - Comprehensive security plugin for WordPress.
Intruder - Intruder is a security monitoring platform for internet-facing systems.
iThemes Security - Security plugin that provides over 30+ ways to secure and protect your WordPress site.
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
Virusdie - All-in-One cloud-based, simple, powerful and gorgeous website security tools built for everyone.
Trustwave Services - Trustwave is a leading cybersecurity and managed security services provider that helps businesses fight cybercrime, protect data and reduce security risk.