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Security report for w3.org

World Wide Web Consortium · Technology · N/a

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

71/100

Risk levelMedium

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

The World Wide Web Consortium (W3C) is a globally recognized non-profit organization dedicated to developing web standards and guidelines that promote accessibility, internationalization, privacy, and security. The website serves as a comprehensive resource for web developers, industry stakeholders, and the public, offering detailed information about standards, groups, events, and ways to get involved. The organization enjoys a strong market position as the authoritative body for web standards, supported by a large membership base including major technology companies. Technically, the website is well-constructed using modern web technologies such as HTML5, CSS3, and JavaScript, with a custom CMS and optimized for performance, accessibility, and mobile responsiveness. The site employs security best practices including HTTPS, modern security headers, and no visible vulnerabilities, reflecting a mature security posture. Security-wise, the site demonstrates strong protections with no exposed sensitive data or vulnerable libraries detected. However, it lacks a dedicated vulnerability disclosure policy and explicit cookie consent mechanisms, which are recommended for enhanced privacy compliance. The WHOIS data is unavailable due to privacy protection, which is justified given the organization's profile. Overall, the website is professional, trustworthy, and secure, with minor areas for improvement in privacy transparency and incident response readiness. The risk level is low, and the site effectively supports W3C's mission and stakeholder engagement.

Scanned

This is an earlier scan of w3.org. View the latest report

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

4 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

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Keep watching w3.org

This scan found 21 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.

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  • 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
75
Security headers
40
Email security
75
DNS health
85
Network security
100
GDPR outside view
53
Average
71

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

W3C operates as a non-profit consortium that drives the development of web standards through collaboration with industry leaders, researchers, and the public. Its business model centers on membership and community engagement rather than commercial revenue. The organization holds a dominant position in the web technology ecosystem, influencing browsers, developers, and content providers worldwide. Key services include standards development, hosting major events like TPAC, and providing tools and resources for developers. The partnership ecosystem is extensive, including major global technology companies and research institutions. Growth indicators include ongoing membership expansion and active community participation. The website reflects a mature, stable operation with a clear strategic focus on open web technologies.

Security posture

The website exhibits a high level of security maturity, employing HTTPS, strict security headers, and no detectable vulnerabilities in scripts or forms. There is no evidence of exposed sensitive data or outdated libraries. However, the absence of a published vulnerability disclosure policy and incident response contact details indicates room for improvement in transparency and readiness. Privacy compliance is strong, with a comprehensive privacy policy and GDPR considerations, though cookie consent mechanisms could be enhanced. The security culture appears robust, aligned with the organization's mission to promote secure web standards. Overall, the security posture supports business continuity and stakeholder trust effectively.

Recommendations

  1. Implement a clear cookie consent banner or mechanism to comply fully with privacy regulations.
  2. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  3. Provide explicit incident response contact information to improve transparency and readiness.
  4. Regularly audit and update third-party libraries and scripts to maintain security hygiene.
  5. Consider obtaining and displaying relevant security certifications or compliance attestations to enhance trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
World Wide Web Consortium
Description
The World Wide Web Consortium (W3C) develops standards and guidelines to help everyone build a web based on the principles of accessibility, internationalization, privacy and security.
Key services
Development of web standards and guidelines, Community and member collaboration, Hosting events such as TPAC, Providing developer tools and resources
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, FontFaceObserver library
Performance
fast
Mobile
excellent
Accessibility
excellent
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of modern security headers
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected
  • Secure forms with no visible issues

Analytics and tracking

Tracking level
minimal
Privacy practices
excellent

Advertising

Transparency
excellent

Site quality

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

Key observations

  1. Website is fully accessible with rich content and navigation.
  2. No signs of WAF or blocking mechanisms.
  3. Strong focus on web standards, accessibility, privacy, and security.
  4. No exposed sensitive information or security vulnerabilities detected.
  5. WHOIS data is unavailable or protected, common for large organizations.
  6. No direct contact emails or phone numbers found on homepage; contact via form.
  7. No advertising or tracking detected, indicating privacy respect.
  8. Social media presence on Mastodon and GitHub only.
Technical notes

Notes

The website is built on a modern, standards-compliant tech stack including HTML5, CSS3, and JavaScript with the FontFaceObserver library for font loading. It uses a custom CMS tailored for W3C's needs. Performance is optimized with responsive images and deferred script loading. Accessibility is prioritized with ARIA roles, skip links, and language attributes. SEO is well addressed through comprehensive meta tags and Open Graph data. No major technical debt or outdated technologies were detected. Hosting details are not explicit but the site is fast and reliable. Opportunities exist to enhance privacy features and formalize security disclosures.
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

Earlier scans of this domain

  1. 71/100 −1Medium29 findingsView report
  2. 72/100 +2Medium28 findingsView report
  3. 70/100Medium30 findingsView report
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