Comprehensive and Easy-To-Use WordPress Security - Comes With Business Grade Support, with no "premium" restrictions
WordPress Website Security Protection: Firewall Security, Login Security, Database Security... Effective, Reliable, Easy to use...
WP AntiDDOS Plugin prevents DDOS attacks on your website by blocking the frequent requests from one or several related IP addresses.
Block all access to your xmlrpc.php, except for JetPack and Automattic. Will poll ARIN for Automattic's subnets and update your .htaccess.