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Security report for threejs.org

Technology · Spain

Medium risk. 9 critical or high findings in Email security, Security headers and 2 other checks.

Security score

58/100

Risk levelMedium

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

Three.js is a mature and widely recognized open-source JavaScript library that enables developers to create 3D graphics in web browsers using WebGL technology. The website serves as a comprehensive resource hub offering documentation, examples, developer tools, and community engagement platforms such as forums and Discord. The project targets web developers and digital artists seeking to implement 3D graphics in their applications. The business model is primarily community-driven and open-source, with educational resources and merchandising as ancillary offerings. Technically, the website is well-structured, fast, and mobile-optimized, leveraging modern web technologies including JavaScript and WebGL. It integrates Google Analytics and Tag Manager for user tracking and performance monitoring. Hosting is managed via DNSimple, and the domain is secured with HTTPS, although DNSSEC is not enabled. The site lacks explicit security headers and formal privacy or cookie policies, which are areas for improvement. From a security perspective, the domain is well-protected with clientDeleteProhibited and related statuses, indicating stable ownership. However, the absence of DNSSEC, security headers, and vulnerability disclosure policies suggests moderate security maturity. No critical vulnerabilities or exposed sensitive data were detected. Privacy compliance is low due to missing policies and consent mechanisms. Overall, the website is trustworthy and professional, with excellent content quality and user experience. Strategic recommendations include implementing comprehensive privacy and cookie policies, enabling DNSSEC, adding security headers, and establishing a vulnerability disclosure process to enhance security posture and compliance.

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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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';…
  3. 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

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

Keep watching threejs.org

This scan found 27 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
62
Security headers
15
Email security
60
DNS health
75
Network security
100
GDPR outside view
35
Average
58

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 threejs.org, from OffSeq Breach.

Total records
359
Employees
0
Customers
310
Third parties
49
Weak passwords
19%

9 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for threejs.org.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

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

Business context

Business profile

Three.js holds a strong market position as a leading open-source 3D JavaScript library, widely adopted by developers globally. Its competitive advantage lies in its extensive documentation, active community, and integration with popular developer tools. The business operates on an open-source model supported by community contributions, educational content, and merchandising. Target customers include web developers, 3D artists, and educational institutions. Growth indicators include continuous version releases and a vibrant ecosystem of examples and tools. The partnership ecosystem includes community forums, Discord, StackOverflow, and GitHub. The company maintains a lean operational footprint with no evident subsidiaries or parent company affiliations.

Security posture

The security maturity of the Three.js website is moderate. The domain registration includes protective statuses that prevent unauthorized transfers or deletions, indicating responsible domain management. HTTPS is enforced, ensuring encrypted communications. However, the lack of DNSSEC reduces DNS security, and no security headers are present in the HTML content, which could expose the site to certain web-based attacks. The absence of a vulnerability disclosure policy or security.txt file limits transparency and responsiveness to security issues. Privacy compliance is weak due to missing privacy and cookie policies. No critical vulnerabilities or exposed sensitive data were found, but improvements in security best practices are recommended to enhance overall posture.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements.
  4. Establish a vulnerability disclosure policy and publish a security.txt file to facilitate responsible reporting.
  5. Add explicit contact information for security incidents and general inquiries to improve trust and compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Three.js is a JavaScript 3D library that enables developers to create and display animated 3D graphics in a web browser using WebGL technology. The website provides documentation, examples, tools, and community resources to support developers.
Key services
3D graphics library, Documentation, Examples, Developer tools, Community forums and support
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, WebGL, Google Analytics, DNSimple DNS, HTML5, CSS3
Platforms
Web
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
65/100
Good practices seen
  • HTTPS enabled (implied by URL)
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a well-established open-source project site
  2. No privacy, cookie, or terms of service policies explicitly found
  3. No contact emails or phone numbers explicitly listed
  4. Strong community presence via Discord, StackOverflow, and forums
  5. Uses Google Analytics and Tag Manager for tracking
  6. No security.txt or vulnerability disclosure policy found
  7. No security headers detected in HTML content
  8. No DNSSEC enabled on domain
  9. Website is fast, mobile optimized, and well structured
  10. No adult or questionable content detected
Technical notes

Notes

The website employs a modern and efficient technology stack centered on JavaScript and WebGL for 3D rendering. It uses Google Analytics and Tag Manager for analytics and tracking. The site is hosted with DNSimple, which provides reliable DNS services but currently lacks DNSSEC. The HTML and CSS are valid and well-structured, contributing to fast load times and excellent mobile responsiveness. The site lacks a CMS, indicating a custom or static site architecture. Accessibility features are basic but sufficient for the target developer audience. SEO is well addressed through proper meta tags and Open Graph data. Technical risks include missing security headers and DNSSEC, which should be addressed to mitigate potential attack vectors.
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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