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Security report for dnsviz.net

Sandia Corporation · Technology · United States

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

55/100

Risk levelMedium

0–100, higher is better. How it is calculated

DNSViz.net is a specialized online tool designed to visualize DNS zones and assist in troubleshooting DNS Security Extensions (DNSSEC). The website is affiliated with Sandia Corporation and supported by reputable organizations such as Verisign and DNS-OARC, positioning it as a trusted resource within the DNS and cybersecurity community. The tool targets DNS administrators and security professionals seeking to analyze DNSSEC deployment and configuration errors. Technically, the site employs standard web technologies including HTML, CSS, JavaScript, and integrates Google Analytics and social media widgets for user engagement and tracking. While the site demonstrates good content quality and professional branding, it lacks explicit privacy and cookie policies, which are important for compliance with data protection regulations. Security-wise, the site uses HTTPS and avoids exposing sensitive data but does not implement advanced security headers or provide vulnerability disclosure information. Overall, DNSViz.net is a credible and useful technical resource with moderate technical sophistication and some room for improvement in privacy and security practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

8 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

Need hands-on remediation? Email guard@offseq.com

Keep watching dnsviz.net

This scan found 20 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
95
Security headers
30
Email security
65
DNS health
65
Network security
40
GDPR outside view
35
Average
55

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The website serves a niche market of DNS and cybersecurity professionals by providing a free, open-source DNS visualization tool. Its business model appears to be non-commercial, focusing on community support and technical resource provision. The affiliation with Sandia Corporation and partnerships with Verisign and DNS-OARC enhance its credibility and market position. The site’s open-source presence on GitHub indicates a collaborative development approach. The lack of commercial elements such as advertising or affiliate programs suggests a focus on service and research rather than revenue generation. The target audience is specialized and technical, which supports the site's focused content and design. Growth potential lies in expanding features and improving compliance and security transparency.

Security posture

DNSViz.net exhibits a moderate security posture. The use of HTTPS ensures encrypted communications, and no sensitive data is exposed in the HTML content. However, the absence of security headers such as Content-Security-Policy and X-Frame-Options reduces protection against common web attacks. The lack of a published security policy, incident response contacts, or vulnerability disclosure mechanisms limits transparency and preparedness for security incidents. The site uses third-party analytics and social media scripts, which may introduce privacy considerations. Overall, while the site is not vulnerable from the visible content, enhancing security headers and publishing security policies would strengthen its security maturity.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie policy to improve GDPR and privacy compliance.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against web attacks.
  3. Provide explicit contact emails for security and incident response to improve transparency and readiness.
  4. Introduce a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  5. Improve mobile responsiveness and accessibility to enhance user experience across devices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sandia Corporation
Description
DNSViz is a tool for visualizing the status of a DNS zone, designed to help understand and troubleshoot DNS Security Extensions (DNSSEC) deployment. It provides visual analysis of DNSSEC authentication chains and DNS resolution paths, listing configuration errors detected.
Key services
DNS zone visualization, DNSSEC troubleshooting, DNS configuration error detection
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, Google Analytics, Twitter Widgets, Google APIs
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
70/100
Good practices seen
  • Use of HTTPS (implied by script sources using https)
  • No visible exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
poor

Advertising

Marketing tools
Google Plus One, Twitter Widgets
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is a specialized technical tool for DNSSEC visualization.
  2. Affiliated with reputable organizations (Sandia National Laboratories, Verisign, DNS-OARC).
  3. No privacy or cookie policies found, which is a compliance gap.
  4. No explicit contact emails or phone numbers found on the main page; contact form is available.
  5. Uses Google Analytics and social media widgets for engagement and tracking.
  6. No security.txt or vulnerability disclosure information present.
  7. No signs of WAF or content blocking.
  8. Content is safe and suitable for general audiences.
Technical notes

Notes

The website uses a straightforward technology stack with HTML, CSS, and JavaScript, integrating Google Analytics and social media widgets for tracking and engagement. The site is hosted with HTTPS, indicating basic security hygiene. Performance is moderate with no evident heavy resources or delays. The site lacks a CMS or advanced frameworks, suggesting a static or lightly dynamic site. SEO and accessibility features are basic but functional. There is an opportunity to modernize the tech stack with responsive design frameworks and improve accessibility compliance. No technical debt or critical risks are apparent from the HTML content.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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