Quad9 provides an open DNS recursive service that prioritizes user privacy and security at no cost. The service blocks malware and phishing domains while maintaining minimal data collection.
Quad9 operates as a free alternative to traditional DNS providers, routing queries through infrastructure designed to protect users from known threats. The service automatically blocks access to domains associated with malware, phishing, and other malicious activity without requiring manual configuration.
The platform emphasizes privacy by limiting data retention and refusing to sell user information to third parties. Unlike some DNS providers, Quad9 does not log queries linked to individual users' IP addresses, reducing tracking exposure.
Users can configure Quad9 on their devices or networks by changing DNS settings to point to the service's nameservers. The open nature of the service means it operates independently, with no mandatory account creation or personal information requirements.
Quad9 has gained traction among privacy-conscious users and organizations seeking baseline security protections without additional costs or complexity. The service is maintained by a nonprofit entity and supported by partner organizations.
Cybercriminals are exploiting thousands of compromised small-business websites to distribute ClickFix malware payloads stored in smart contracts on the BNB Smart Chain, amplifying the reach of a known threat.
A government website running Ruby on Rails was exploited within hours of a critical vulnerability patch becoming public. The rapid attack demonstrates how quickly threat actors weaponize disclosed security flaws.
A critical remote code execution vulnerability affecting all Chromium versions is currently being exploited in the wild. The flaw bypasses the browser's sandbox protection, allowing attackers to execute arbitrary code with full system access.