Federal News
NIST Updates Federal DNS Security Guidance
March 23, 2026
NIST has released the first major update in over a decade to its Secure Domain Name System Deployment Guide (SP 800-81 Revision 3), reflecting significant changes in cybersecurity threats and network architectures. This updated guidance mandates federal civilian agencies to enhance their DNS security posture by adopting modern protective DNS systems, encrypted DNS protocols, and updated DNSSEC cryptography. It also recommends integrating DNS logs with security information and event management (SIEM) systems and improving authoritative DNS server hygiene and infrastructure design. These changes align DNS security with zero-trust principles, emphasizing DNS as a critical security control.
- Federal procurement professionals should anticipate increased demand for DNS security solutions that support encrypted DNS, DNSSEC updates, and protective DNS capabilities.
- Agencies will require vendors capable of delivering integrated DNS security architectures compatible with SIEM and zero-trust frameworks.
- This update signals a shift in federal cybersecurity requirements, prompting contractors to align offerings with NIST SP 800-81r3 to remain competitive.
- Organizations supporting federal civilian agencies can leverage this guidance to propose modernization projects focused on DNS infrastructure and security enhancements.
NIST is effectively urging organizations to rethink DNS architecture as part of a zero-trust security strategy.
— NIST Guidance
Agencies
National Institute of Standards and Technology, Federal Civilian Executive Branch agencies
Vendors
Infoblox
Locations
Sources
- NIST updates its DNS security guidance for the first time in over a decade - Help Net Security · Help Net Security · Mar 23
- NIST Overhauls DNS Security Guidance After 12 Years, Reflecting a Transformed Threat Landscape · LinkedIn · Mar 23