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Security report for schema.org

Schema.org Community Group · Technology · N/a

Medium risk. 9 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

59/100

Risk levelMedium

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

Schema.org is a well-established, community-driven project founded by major technology companies including Google, Microsoft, Yahoo, and Yandex. It provides a comprehensive and extensible vocabulary for structured data markup on the Internet, widely adopted by millions of domains and powering rich experiences across major platforms. The website reflects this authoritative position with excellent content quality, consistent branding, and a clear focus on technical and developer audiences. Technically, the site employs modern web technologies such as HTML5, CSS, JavaScript, and jQuery, and integrates Google services including Custom Search Engine and Analytics. Hosting on Google nameservers and use of HTTPS ensures reliable and secure delivery. The site is mobile optimized and accessible, with good SEO practices evident. However, some security best practices such as enabling DNSSEC and publishing security headers could be improved. From a security perspective, the domain registration is consistent and trustworthy, with domain status protections in place. No WAF or blocking mechanisms interfere with content access. The site lacks explicit privacy and cookie policies, which represents a compliance gap especially under GDPR. No incident response or vulnerability disclosure information is published, which could be enhanced to improve transparency and trust. Overall, Schema.org presents a professional, secure, and authoritative web presence with minor areas for improvement in privacy compliance and security hardening. The risk profile is low, and the site is suitable for its broad technical audience.

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

9 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 X-Frame-Options header

      Prevents clickjacking attacks

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

    • 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

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

Keep watching schema.org

This scan found 25 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
42
Security headers
15
Email security
70
DNS health
90
Network security
100
GDPR outside view
35
Average
59

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

Schema.org occupies a leading position in the structured data ecosystem, supported by major technology corporations. Its open community model fosters broad adoption and continuous development. The business model is non-commercial but highly strategic, enabling interoperability and enhanced search experiences across the web. The project targets webmasters, developers, and search engines, providing schemas that facilitate data sharing and rich content presentation. Partnerships with Google, Microsoft, Yahoo, and Yandex strengthen its market presence and credibility. The site’s content and tooling support growth and adoption, while the lack of direct contact information aligns with its community-driven nature rather than a traditional commercial enterprise.

Security posture

The security posture of the Schema.org website is solid but not fully mature. HTTPS is enforced, and domain registration protections are in place, indicating good baseline security. However, the absence of DNSSEC and security headers such as Content-Security-Policy or Strict-Transport-Security suggests room for improvement. No sensitive data exposure or vulnerable libraries were detected. The lack of published security policies, incident response contacts, or vulnerability disclosure mechanisms limits transparency and readiness for security incidents. Privacy compliance is partial due to missing privacy and cookie policies. Overall, the site is low risk but would benefit from enhanced security controls and compliance documentation.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Publish comprehensive privacy and cookie policies to enhance GDPR and global privacy compliance.
  3. Implement and configure security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Establish and publicize an incident response policy and contact channels for security issues.
  5. Add a vulnerability disclosure policy or security.txt file to encourage responsible reporting and improve trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Schema.org Community Group
Description
Schema.org is a collaborative, community activity with a mission to create, maintain, and promote schemas for structured data on the Internet, on web pages, in email messages, and beyond. Founded by Google, Microsoft, Yahoo, and Yandex, it provides a shared vocabulary for structured data markup used by millions of web domains and major applications.
Key services
Providing extensible schemas for structured data, Maintaining and promoting schema vocabularies, Community collaboration and development
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, jQuery, Google Custom Search Engine, Google Analytics
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Adsense
Marketing tools
Google Custom Search Engine
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. No privacy or cookie policy pages found, which is a compliance gap.
  3. Terms of service page is present and linked in the footer.
  4. No direct contact emails or phone numbers found on the homepage or metadata.
  5. Website uses modern web technologies and is hosted on Google infrastructure.
  6. Strong branding and trust signals from association with major tech companies.
  7. No security.txt or vulnerability disclosure information found.
  8. Advertising is limited to Google Adsense and Google Custom Search integration.
  9. Google Analytics and Tag Manager are used for tracking with moderate user tracking level.
  10. No explicit security headers detected in provided data; DNSSEC not enabled.
Technical notes

Notes

The website is built on a modern and stable technology stack including HTML5, CSS, JavaScript, and jQuery, with integration of Google services for search and analytics. Hosting on Google nameservers ensures reliable infrastructure. The site loads quickly and is mobile optimized with good accessibility features. SEO is well addressed through meta tags and structured data. There is no detected CMS, indicating a custom or static site approach. Technical debt appears low, but the absence of DNSSEC and security headers indicates some technical modernization opportunities to enhance security posture.
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. 63/100Medium31 findingsView report
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