Summary:
- Quad9 is a free, public, and nonprofit Domain Name System (DNS) service that helps protect users from accessing malicious websites.
- The service provides security features like blocking access to known malicious websites, protecting against phishing and malware, and improving internet privacy.
- Quad9 is a collaborative effort between several organizations, including IBM, Packet Clearing House, and the Global Cyber Alliance, to create a secure and reliable DNS service for internet users.