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DNSSEC: What It Is and Why Most Businesses Don’t Have It

Something happens every time you visit a website, open an email, or log into an online system. It’s invisible, it takes milliseconds, and attackers have figured out how to fake it.

It’s called a Domain Name System (DNS) lookup — the behind-the-scenes process that translates a domain name like yourcompany.com into the address your device needs to make a connection. DNS has been running in the background since the 1980s, and it was never built to verify that the answers it returns are legitimate. Attackers exploit that gap to silently redirect you or your customers to a fake site — one that looks identical to the real thing — without anyone realizing it.

What’s on the line:

  • Stolen login credentials
  • Intercepted sensitive data
  • Fraudulent transactions
  • For regulated industries: compliance violations on top of the breach itself

So what’s the fix?

Domain Name System Security Extensions (DNSSEC) adds a cryptographic signature to DNS responses — essentially a tamper-evident seal. If a response has been altered or forged, your systems know not to trust it.

Why most businesses don’t have it yet:

Despite being available for nearly 20 years, DNSSEC is enabled on only about 4.27% of domains globally — and the largest domain registrar in the world has an adoption rate below 1% (DNSChkr, February 2026).

The main reason? It used to be complicated to set up. That’s changed. For most organizations today, enabling DNSSEC is a straightforward configuration change, not a major infrastructure project.

What GGT is doing about it:

For our managed security clients, DNSSEC configuration is something we take care of. If your IT team manages your own DNS, enabling DNSSEC is typically a configuration change in your domain registrar or DNS provider’s control panel — most major providers have made this straightforward in recent years. Not sure where to start? We’re happy to help.


Okay, let’s geek out for a minute.

DNSSEC protects the tools you already rely on

Your email authentication protocols — Sender Policy Framework (SPF), DomainKeys Identified Mail (DKIM), and Domain-based Message Authentication, Reporting, and Conformance (DMARC) — all depend on DNS to function correctly. So do your SSL certificates (the padlock that tells visitors your site is secure) and your VPN connections (the private tunnels your team uses to connect remotely). If DNS gets compromised, those protections can be undermined too. DNSSEC is what keeps the foundation those tools are built on trustworthy.

The compliance angle

The U.S. federal government has required DNSSEC for all federal systems under NIST SP 800-53 for nearly two decades. If your organization works with federal agencies, handles Controlled Unclassified Information (CUI), or is pursuing Cybersecurity Maturity Model Certification (CMMC), DNS integrity is part of the compliance picture. It also aligns with the HIPAA Security Rule’s requirements for information system integrity and is increasingly referenced in frameworks like NIST CSF 2.0 and SEC Regulation S-P.

Even if you’re not in a regulated industry, the federal mandate is a useful signal: this is a baseline the government considers non-negotiable for its own systems. It’s worth asking whether your organization is holding itself to the same standard.


DNSSEC isn’t glamorous, but it’s the kind of quiet, foundational protection that everything else depends on — and that’s exactly why it matters.

Want to chat about your business security needs? Schedule time with us here.

Stay safe 💜

Geek Girl Tech is a women-owned cybersecurity firm built for mission-driven organizations — and the women changing the industry from the inside.

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