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Security report for tc39.es

Ecma International's TC39 · Technology · N/a

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

Security score

60/100

Risk levelMedium

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

Ecma International's TC39 is a recognized standards committee responsible for the development and maintenance of the JavaScript (ECMAScript) language specification. The website serves as a hub for developers, implementers, and academics to access meeting agendas, proposals, and specification documents. It is well-positioned as an authoritative source in the technology standards sector, with a clear focus on community collaboration and open development processes. Technically, the website is built with modern web standards including HTML5, CSS3, and JavaScript, utilizing Google Fonts for typography. The site is mobile-optimized, fast-loading, and accessible, with a clean and professional design. However, explicit security headers are not visible in the provided HTML, and no analytics or tracking scripts were detected, indicating a privacy-conscious approach but also a potential area for improvement in security hardening. From a security perspective, the site uses HTTPS, ensuring encrypted communication. There are no visible vulnerabilities or exposed sensitive data. The lack of explicit privacy and cookie policies, as well as absence of contact information for security incidents, suggests room for improvement in compliance and incident response readiness. The WHOIS data is unavailable due to registrar restrictions, limiting domain trust verification, but the strong association with Ecma International and the professional nature of the site support its legitimacy. Overall, the website demonstrates a high level of professionalism and trustworthiness with minor gaps in privacy compliance and security policy transparency. Strategic improvements in these areas would enhance the site's security posture and user trust.

Scanned

This is an earlier scan of tc39.es. View the latest report

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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. GDPR outside view

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

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • 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

  2. 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';…

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Keep watching tc39.es

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.

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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
72
Security headers
15
Email security
85
DNS health
75
Network security
100
GDPR outside view
10
Average
60

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention tc39.es, from OffSeq Breach.

No leaked records found

Breach holds no records for tc39.es right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

TC39 operates as a standards development organization within the technology sector, specifically focusing on JavaScript language evolution. Its business model revolves around collaborative open standards development rather than commercial revenue generation. The target audience includes JavaScript developers, browser vendors, and academic researchers. The organization benefits from its affiliation with Ecma International, which enhances its market position and credibility. The website reflects a mature digital presence with active community engagement through GitHub and discussion forums. No direct revenue streams or commercial partnerships are evident from the site content. The ecosystem includes related domains such as ecma-international.org and community platforms like discourse and matrix, supporting a robust partnership and collaboration network.

Security posture

The website exhibits a moderate to strong security posture with HTTPS enforced and no visible sensitive data exposure. However, the absence of explicit security headers such as Content-Security-Policy and Strict-Transport-Security reduces the overall security hardening. No vulnerability disclosure or security policy pages are present, and no contact channels for incident response are provided, which could delay response to security incidents. The lack of tracking and analytics scripts reduces privacy risks but also limits insight into user behavior. The WHOIS data is restricted, which is common for .es domains but limits domain trust verification. Overall, the security maturity is adequate for a standards organization but could be enhanced with formal policies and improved header configurations.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie consent mechanism to improve GDPR compliance.
  2. Add explicit security headers (CSP, HSTS, X-Frame-Options) to enhance protection against common web attacks.
  3. Provide clear contact information for security incidents and consider publishing a security.txt file for vulnerability disclosure.
  4. Consider adding analytics with privacy-respecting configurations to better understand user engagement while maintaining compliance.
  5. Work with the domain registrar or hosting provider to obtain more detailed WHOIS information or consider domain privacy disclosures to improve trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Ecma International's TC39
Description
Ecma International's TC39 is a group of JavaScript developers, implementers, academics, and more, collaborating with the community to maintain and evolve the definition of JavaScript. They develop the ECMAScript specification and meet regularly to discuss proposals.
Key services
Development and maintenance of ECMAScript standards, Publishing meeting agendas and notes, Facilitating community contributions to language proposals
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Google Fonts (Open Sans, Source Sans Pro)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by URL scheme https://)
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Transparency
poor

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 about JavaScript standards.
  2. No contact emails or phone numbers explicitly provided on the site.
  3. No privacy or cookie policy explicitly found except a code of conduct page.
  4. No forms detected on the main page for data collection.
  5. No visible analytics or tracking scripts detected.
  6. Strong branding and consistent design aligned with Ecma International.
  7. No security headers detected in HTML source; HTTPS implied but headers unknown.
  8. WHOIS data unavailable due to registrar restrictions, limiting domain trust verification.
Technical notes

Notes

The website is built on a clean, modern tech stack using standard web technologies without reliance on heavy frameworks or CMS platforms. It uses Google Fonts for typography and custom CSS and JavaScript for styling and interactivity. The site is mobile responsive and accessible with semantic HTML structure. Performance is optimized with deferred JavaScript loading and minimal external dependencies. No CMS or hosting provider information is directly discernible from the HTML. The absence of analytics and tracking scripts suggests a minimalistic approach to data collection. The site could benefit from enhanced security headers and formalized privacy and security policies to reduce technical debt and improve compliance.
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. 60/100Medium34 findingsView report
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