DNS infrastructure provides ubiquitous visibility into networks and is a critical point for security enforcement. It can be leveraged for malware detection, threat hunting, and distributing security policies. DNS data combined with DHCP data provides important network context for tasks like event correlation, incident response, and investigating threat actors. DNS is also a frequent target for attacks like DDoS and data exfiltration, making DNS security important for service availability. The document argues that DNS should be viewed as a strategic security asset rather than just a network liability.