The Wordfence WordPress security plugin provides free enterprise-class WordPress security, protecting your website from hacks and malware.
The Sucuri WordPress Security plugin is a security toolset for security integrity monitoring, malware detection and security hardening.
Secure login with captcha, two factor authentication and brute force attack protection. Temporary and permanent blacklists for more login security
SUA – Secure User Account WordPress Login is a plugin that will allow you to secure your account
Sucuri Security Website Firewall (CloudProxy) is a subscription based WAF and Cloud-based IPS designed to provide optimal security to everyday website