Virusdie - All-in-One cloud-based, simple, powerful and gorgeous website security tools built for everyone.
CloudFlare - Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.
Sucuri - Website Protection, Malware Removal, and Blacklist Prevention
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
Wordfence - Comprehensive security plugin for WordPress.
KeyCDN - KeyCDN is a high-performance Content Delivery Network (CDN). Lowest price globally at $0.04/GB with HTTP/2 Support and free Origin Shield.