Skip to main content

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 specialized standards organization focused on 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. The organization holds a strong market position as the authoritative body for JavaScript standards, with a clear focus on community collaboration and open development. Technically, the website is well-constructed using modern web standards including HTML5, CSS3, and JavaScript, with Google Fonts enhancing typography. The site is mobile-optimized, fast-loading, and accessible, providing a professional user experience. However, there is room for improvement in security headers and explicit privacy and cookie policies. From a security perspective, the site uses HTTPS and does not expose sensitive data or vulnerable libraries. The absence of explicit security headers and vulnerability disclosure mechanisms suggests an opportunity to strengthen the security posture. No signs of blocking or WAF interference were detected, indicating full accessibility. Overall, the website is trustworthy and professional, with strong business credibility linked to Ecma International. The lack of contact information and privacy policies slightly reduces privacy compliance scores but does not significantly impact overall trust. Strategic recommendations include enhancing security headers, publishing clear privacy and cookie policies, and providing contact channels for security incidents.

Scanned

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';…

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

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.

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.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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 niche standards body within the technology sector, specifically targeting the JavaScript development community. Its competitive advantage lies in its authoritative role in ECMAScript specification and its open, community-driven approach. The business model is non-commercial, focusing on standards development and collaboration. Revenue streams are not applicable as it is a standards organization. The target customer segments include JavaScript developers, browser vendors, and academic researchers. Growth indicators include active GitHub repositories and frequent meetings. The partnership ecosystem includes Ecma International and various open-source communities. The organization's operations emphasize transparency and community engagement, positioning it as a trusted leader in programming language standards.

Security posture

The security maturity level of the TC39 website is moderate to high. The use of HTTPS ensures encrypted communications, and no sensitive data exposure or vulnerable libraries were detected. However, the absence of common security headers such as Content-Security-Policy and X-Frame-Options represents a gap in defense-in-depth strategies. There is no visible incident response or vulnerability disclosure information, which could hinder timely reporting and mitigation of security issues. Compliance with GDPR and other privacy regulations is limited due to missing explicit privacy and cookie policies. The security culture appears focused on transparency and community trust but would benefit from formalizing security policies and contact points.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  3. Add explicit contact information for security incidents and consider publishing a security.txt file.
  4. Introduce cookie consent mechanisms if cookies are used to comply with privacy regulations.
  5. Regularly audit and update the website to ensure no vulnerable libraries or exposed sensitive data.
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 related standards.
Key services
Development and maintenance of ECMAScript specifications, Publishing meeting agendas and notes, Facilitating community contributions and 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)
  • No visible exposed sensitive data
  • No forms collecting sensitive data on main page

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 no blocking or WAF challenges.
  2. WHOIS data is unavailable due to .es registry access restrictions.
  3. Website content is professional, well-structured, and focused on JavaScript standards.
  4. No contact emails or phone numbers are explicitly provided on the site.
  5. No explicit privacy or cookie policies found, only a code of conduct page.
  6. No forms collecting personal data detected on the main page.
  7. No advertising or tracking technologies detected.
  8. Strong affiliation with Ecma International and GitHub repositories.
  9. No security headers detected in the HTML content; recommend adding them.
  10. No vulnerability disclosure or security.txt found.
Technical notes

Notes

The website is built on a clean and modern tech stack using standard web technologies such as HTML5, CSS3, and JavaScript. It leverages Google Fonts for typography and hosts static assets like SVG logos and CSS files locally. The site is responsive and optimized for mobile devices, providing a fast and accessible user experience. There is no evidence of a CMS or third-party hosting provider from the HTML content. Performance is fast with minimal external dependencies. Technical risks are low, but the lack of security headers and formal privacy mechanisms represent areas for modernization and risk mitigation.
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. 60/100Medium33 findingsView report
Reviews of this site

Share your experience with tc39.es. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review tc39.es.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.