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Security report for dev.java

Oracle Corporation · Technology · United States

Medium risk. 7 critical or high findings in Email security, Security headers and 2 other checks.

Security score

63/100

Risk levelMedium

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

Dev.java is an official Oracle-backed platform dedicated to Java developers, offering a comprehensive suite of tutorials, news, videos, downloads, and community resources. The website serves as a central hub for Java programming education and engagement, targeting developers globally. The platform benefits from Oracle's strong market position and branding, reinforcing its credibility and trustworthiness in the technology sector. Technically, the site employs modern web technologies including Bootstrap, Algolia search, and privacy-conscious analytics, hosted on Oracle Cloud infrastructure, ensuring fast performance and excellent mobile optimization. Security posture is solid with HTTPS enforced and domain protections in place, though improvements such as DNSSEC and enhanced security headers could further strengthen defenses. Privacy compliance is well addressed through links to Oracle's comprehensive privacy and terms policies, though explicit cookie consent mechanisms are absent. Overall, the site presents a professional, trustworthy, and content-rich experience for its audience.

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

7 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 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 dev.java

This scan found 26 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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Recommended

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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
60
DNS health
75
Network security
100
GDPR outside view
53
Average
63

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

The platform positions itself as a leading resource for Java developers, leveraging Oracle's extensive ecosystem and brand authority. Its business model focuses on community engagement, education, and providing official Java resources, which supports Oracle's broader Java ecosystem strategy. The site links to key Oracle and OpenJDK resources, indicating strong partnerships and alignment with open-source initiatives. The absence of direct contact information suggests a focus on self-service and community-driven support. The platform's growth potential is supported by regular content updates, event promotions, and integration with social media channels. Strategic partnerships with conferences and community groups further enhance its market presence.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, domain registration protections, and minimal exposure of sensitive data. However, the lack of DNSSEC and security headers such as Content-Security-Policy and X-Frame-Options represents areas for improvement. No vulnerability disclosures or incident response contacts are visible, which could limit transparency and responsiveness to security issues. Privacy practices are aligned with Oracle's policies, and the use of privacy-focused analytics indicates a commitment to user data protection. Overall, the security maturity is good but could be enhanced by adopting additional best practices and publishing clear security policies.

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 site against common web attacks.
  3. Add a visible cookie consent banner or mechanism to comply with privacy regulations and improve user transparency.
  4. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  5. Provide clear incident response contact information to enhance trust and readiness for security events.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Oracle Corporation
Description
Official Java platform site providing tutorials, news, videos, downloads, and community resources for Java developers.
Key services
Java tutorials, Java downloads, Community engagement, News and events, Educational videos
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Bootstrap 5.1.1, Algolia Search, Prism.js, jQuery 3.6.0
Frameworks
Bootstrap
Platforms
Oracle Cloud DNS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

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

Analytics and tracking

Services
Fathom Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Fathom Analytics
Marketing tools
Algolia Search
Transparency
basic

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 and no blocking mechanisms.
  2. Strong Oracle branding and official Java platform presence.
  3. Comprehensive educational resources and community engagement.
  4. Modern technology stack with good performance and mobile optimization.
  5. Security practices are good but could be improved with DNSSEC and security headers.
  6. Privacy and terms policies are present and linked to Oracle legal pages.
  7. No direct contact emails or phone numbers found on the site.
  8. Minimal user tracking with privacy-respecting analytics (Fathom).
Technical notes

Notes

The website is built on a modern and robust technology stack featuring Bootstrap for responsive design, Algolia for search functionality, Prism.js for code syntax highlighting, and jQuery for DOM manipulation. Hosting on Oracle Cloud DNS ensures reliable infrastructure and domain management. The site is well-optimized for performance and mobile devices, with clean HTML structure and proper meta tags supporting SEO. The use of privacy-respecting analytics (Fathom) reflects a modern approach to user tracking. No CMS is detected, indicating a custom or static site architecture. Overall, the technical implementation is strong with opportunities to enhance security configurations and privacy mechanisms.
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. 66/100Medium32 findingsView report
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