Cobalt Strike - Advanced threat tactics for penetration testers.
AWS WAF - AWS WAF is a web application firewall that helps protect your web applications from common web exploits.
Shodan - Shodan is the world's first search engine for Internet-connected devices.
ModSecurity - ModSecurity is an Open Source web application firewall developed by Trustwave's SpiderLabs.
Censys - Censys helps organizations, individuals, and researchers find and monitor every server on the Internet to reduce exposure and improve security.
Barracuda Web Application Firewall - Barracuda Web Application Firewall offers security and DDoS protection against automated & targeted attacks.