The updated NIST SP 800-81r3 guidelines elevate DNS to a critical security control layer, highlighting severe risks from misconfigurations such as dangling CNAMEs, lame delegations, and exposed resource records. Automated scanners and AI bots are increasingly exploiting these vulnerabilities at scale to hijack subdomains and map infrastructure, necessitating continuous DNS posture management and cryptographic protections like DNSSEC.
NIST SP 800-81r3
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DNS Is Your Most Critical — and Most Misconfigured — Security Control