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Security report for ens.domains

Ethereum Name Service (ENS) · Technology · N/a

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

73/100

Risk levelMedium

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

Ethereum Name Service (ENS) operates a leading decentralized naming protocol that simplifies blockchain addresses into human-readable names, enhancing the Web3 user experience. The website reflects a mature, community-driven non-profit with strong ecosystem partnerships including Coinbase Wallet, Rainbow, Brave, GoDaddy, Etherscan, and Uniswap. The platform targets Web3 users, developers, and organizations seeking decentralized identity solutions. Technically, the site is built on modern frameworks like Next.js and React, hosted likely via Cloudflare, and optimized for performance and mobile use. Security posture is strong with HTTPS, security headers, and a bug bounty program, though privacy compliance could be improved by adding cookie consent mechanisms. WHOIS data is limited due to TLD restrictions but the registrar is reputable and the domain usage aligns with the business. Overall, ENS demonstrates a high level of professionalism, trustworthiness, and technical maturity.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 100 · Medium
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

5 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  2. GDPR outside view

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

    • 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

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

  4. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain: k4n6ljgtvhlybmvmepp4yirpvypcqvqx35q3sstewteavvst353q.mx-verification.google.com

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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

Keep watching ens.domains

This scan found 19 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

Email alerts on material changes and an exportable JSON history of every change.

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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
75
Security headers
55
Email security
85
DNS health
70
Network security
100
GDPR outside view
53
Average
73

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

ENS holds a strong market position as the primary decentralized naming service for Ethereum and Web3, supported by a large user base and extensive integrations. Its business model revolves around decentralized identity and community governance via ENS DAO. Revenue streams likely include name registrations and ecosystem partnerships. The target customers are crypto users and developers. The partnership ecosystem is robust, enhancing credibility and adoption. The website content and design reflect a well-established organization with a clear mission to improve internet identity standards. Growth indicators include active community engagement and continuous development as seen in the roadmap and developer resources.

Security posture

The website exhibits a mature security posture with enforced HTTPS, comprehensive security headers, and no visible vulnerabilities or exposed sensitive data. The presence of a bug bounty program on Immunefi indicates proactive vulnerability management. However, the absence of a dedicated security policy page and incident response contact limits transparency. No security.txt file was found, which is a recommended best practice. Privacy compliance is good but could be enhanced with cookie consent mechanisms. Overall, the security culture appears strong but could benefit from formalized documentation and incident response visibility.

Recommendations

  1. Implement a visible cookie consent banner to comply with privacy regulations and enhance user trust.
  2. Publish a dedicated security policy and incident response page detailing procedures and contacts.
  3. Add a security.txt file to standardize vulnerability disclosure and improve security transparency.
  4. Consider publishing Data Protection Officer contact information to strengthen GDPR compliance.
  5. Regularly audit third-party dependencies and update them to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Ethereum Name Service (ENS)
Description
ENS is a community-driven non-profit protocol that provides human-readable names for Ethereum addresses and other resources, enabling a better Web3 internet experience.
Key services
ENS name registration, Decentralized identity management, Governance via ENS DAO, Developer tools and documentation
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, Web3 technologies
Frameworks
Next.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Bug bounty program
  • No exposed sensitive data in HTML
  • Secure forms with minimal data collection

Analytics and tracking

Services
Plausible Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
plausible.io
Marketing tools
Plausible Analytics
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professionally presented with strong branding consistency.
  3. Strong ecosystem partnerships with major Web3 and crypto companies.
  4. Privacy and terms of service are clearly linked and comprehensive.
  5. No direct phone numbers or physical addresses found; contact via email and support portal.
  6. No cookie consent mechanism detected, which could be improved for privacy compliance.
  7. Security posture is strong with HTTPS and security headers.
  8. WHOIS data is limited due to TLD restrictions but registrar is reputable.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, ensuring a performant and responsive user experience. Hosting appears to be via Cloudflare, providing CDN and security benefits. The site is well-optimized for mobile devices and accessibility, with good SEO practices evident in meta tags and structured content. No CMS was detected, indicating a custom-built solution tailored for the ENS ecosystem. Performance is fast with minimal loading delays. Technical risks are low, but ongoing maintenance of dependencies and security headers is recommended to sustain the high-quality infrastructure.
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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