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Security report for openjdk.org

Oracle Corporation · Technology · United States

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

66/100

Risk levelMedium

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

OpenJDK.org serves as the official community site for the OpenJDK project, an open-source implementation of the Java Platform, Standard Edition. The site is maintained under the auspices of Oracle Corporation, which provides both free GPL-licensed JDK binaries and commercially licensed versions. The platform targets Java developers, open-source contributors, and the broader technology community interested in Java development and innovation. The website offers resources for downloading the JDK, learning about active projects, and contributing to the codebase, positioning itself as a central hub for Java platform collaboration. Technically, the website is built on a custom static site architecture using standard web technologies including HTML, CSS, and JavaScript. It leverages GitHub and Mercurial for source code hosting and integrates privacy-focused analytics via Fathom. Hosting is supported by Akamai CDN infrastructure, ensuring fast content delivery. The site demonstrates good SEO and basic mobile optimization, though accessibility features are moderate. No major CMS or frameworks are detected, indicating a lightweight and stable technical implementation. From a security perspective, the site enforces HTTPS and employs domain registration protections such as clientDeleteProhibited status. However, DNSSEC is not enabled, and security headers are not explicitly detected, representing areas for improvement. Privacy compliance is strong with clear privacy and terms of use policies, though no cookie consent mechanism is present despite analytics usage. No direct contact information or incident response contacts are published, which could be enhanced to improve transparency and trust. Overall, OpenJDK.org is a professional, trustworthy, and well-maintained site supporting a critical open-source technology project. The security posture is solid but could benefit from additional hardening measures. Privacy practices are good but could be improved with cookie consent. The site is free of adult or questionable content and serves a general technology audience. Strategic recommendations include enabling DNSSEC, adding security headers, publishing a security.txt file, and implementing cookie consent to further strengthen compliance and security.

Scanned

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

6 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 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 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 Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching openjdk.org

This scan found 23 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.

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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
52
Security headers
50
Email security
60
DNS health
80
Network security
100
GDPR outside view
53
Average
66

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

OpenJDK.org operates as a key open-source project under Oracle Corporation, providing the reference implementation of the Java SE platform. Its market positioning is strong as the authoritative source for Java development binaries and community collaboration. The business model combines open-source community engagement with Oracle's commercial offerings. Revenue streams are indirect, primarily through Oracle's commercial JDK products and related services. The target customers include Java developers, enterprises, and open-source contributors. Growth is supported by continuous Java platform innovation and broad industry adoption. The partnership ecosystem includes Oracle and various open-source contributors. The site reflects a mature, stable operation with consistent branding and professional content, reinforcing its leadership in the Java ecosystem.

Security posture

The security maturity of OpenJDK.org is moderate to high. HTTPS is enforced, and domain registration protections are in place, reducing risks of domain hijacking. However, the absence of DNSSEC and security headers such as Content-Security-Policy and Strict-Transport-Security indicates room for improvement. No vulnerabilities or exposed sensitive data were detected in the content. Privacy policies are comprehensive, but cookie consent is missing despite analytics usage, which could be a compliance gap under GDPR. Incident response and security contact information are not published, limiting transparency. Overall, the site demonstrates a solid security foundation appropriate for an open-source project website but should enhance security controls and compliance mechanisms to align with best practices.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve DNS security.
  2. Implement security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to harden the website against common web attacks.
  3. Publish a security.txt file and provide clear incident response contact information to facilitate vulnerability reporting and improve transparency.
  4. Add a cookie consent mechanism to comply with GDPR and other privacy regulations given the use of analytics tracking.
  5. Regularly review and update privacy and security policies to maintain compliance and build user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Oracle Corporation
Description
OpenJDK is the open-source implementation of the Java Platform, Standard Edition, providing free, GPL-licensed, production-ready JDK binaries and fostering community collaboration on Java development projects.
Key services
Open-source JDK binaries distribution, Java platform development collaboration, Community-driven project hosting and contribution
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, GitHub, Mercurial, UseFathom Analytics
Performance
fast
Mobile
basic
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Services
UseFathom Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
UseFathom Analytics
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is focused on open-source Java development and community collaboration.
  3. Strong association with Oracle Corporation as parent company.
  4. No direct contact emails or phone numbers found on main page.
  5. Privacy and terms of use policies are present and comprehensive.
  6. No cookie consent mechanism detected despite use of analytics.
  7. No explicit security policy or incident response contacts published.
  8. Use of modern analytics with privacy-respecting Fathom.
  9. No advertising or affiliate marketing detected.
  10. Technical infrastructure appears stable and professionally maintained.
Technical notes

Notes

The website is built using standard web technologies without reliance on heavy CMS or frameworks, resulting in fast load times and stable performance. Hosting via Akamai CDN ensures global content delivery efficiency. The use of GitHub and Mercurial for source control supports collaborative development. Analytics are implemented via a privacy-respecting service (Fathom), minimizing user tracking. Mobile optimization and accessibility are basic but functional. The site lacks advanced technical frameworks or CMS, which reduces complexity but may limit dynamic content capabilities. Opportunities exist to modernize accessibility features and implement additional security headers to reduce technical risks.
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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