Secure64 DNS Guard is a DNS-based security solution that protects networks and subscribers against various cyber threats. It operates within the network, providing protection for all devices without requiring user intervention. DNS Guard utilizes DNS to defend against ransomware, phishing attacks, and malware infections. It neutralizes infected devices to prevent further harm and offers real-time security information to stop malicious activity. Additionally, it can block DNS tunnels used for bandwidth piracy and data theft.