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Security report for dev.java

Oracle and/or its affiliates · Technology · United States

Medium risk. 6 critical or high findings in Email security, Security headers and 1 other check.

Security score

66/100

Risk levelMedium

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

Dev.java is an official and authoritative resource platform for Java developers, operated under Oracle Corporation. It offers extensive tutorials, news, event information, and community engagement focused on the Java programming language and platform. The site is well-positioned in the technology sector as a trusted source for Java-related content, targeting developers and programming professionals worldwide. Technically, the website employs modern web technologies including Bootstrap, Algolia search, and privacy-conscious analytics (Fathom), ensuring fast performance, mobile optimization, and good accessibility. Security posture is strong with HTTPS enforced and use of script integrity attributes, though explicit security headers and vulnerability disclosure mechanisms are absent. Privacy compliance is supported through links to Oracle's comprehensive privacy and terms policies, but lacks an on-site cookie consent mechanism. Overall, the site demonstrates high professionalism, trustworthiness, and content quality, making it a valuable resource for its audience.

Scanned

This is an earlier scan of dev.java. View the latest report

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. 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 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

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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
95
Security headers
15
Email security
60
DNS health
75
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

The website serves as a strategic platform for Oracle to engage the Java developer community, reinforcing its market leadership in Java technology. Its business model centers on providing free educational content, community events, and official downloads, supporting Oracle's broader ecosystem and subscription services. The site leverages partnerships with OpenJDK and other Java projects, enhancing its credibility. The absence of direct contact information suggests a focus on self-service and community-driven support. The platform's growth potential lies in expanding interactive features and enhancing compliance transparency. Oracle's strong brand and Java's global developer base underpin the site's competitive advantage.

Security posture

The security maturity of the website is good, with HTTPS enforced and no visible exposure of sensitive data. The use of CDN-hosted scripts with integrity checks reduces risk from third-party resources. However, the lack of explicit security headers such as Content-Security-Policy and absence of a vulnerability disclosure policy or security.txt file represent gaps in security best practices. No incident response contact channels are provided, which could hinder timely reporting and mitigation of security issues. Privacy compliance is partially addressed through external policy links but would benefit from an on-site cookie consent mechanism. Overall, the site is secure but could improve transparency and proactive security measures.

Recommendations

  1. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Add a visible vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  3. Deploy a cookie consent banner to comply with GDPR and other privacy regulations given the use of analytics.
  4. Provide clear incident response contact information to improve security communication and trust.
  5. Regularly audit third-party libraries and scripts to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Oracle and/or its affiliates
Description
A comprehensive resource and community hub for Java developers providing tutorials, news, videos, downloads, and event information related to the Java programming language and platform.
Key services
Java tutorials and learning paths, Java downloads, Community events and news, Java future and project updates
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Bootstrap 5.1.1, Algolia Search, jQuery 3.6.0
Frameworks
Bootstrap
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of integrity and crossorigin attributes on CDN scripts

Analytics and tracking

Services
Fathom Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Fathom Analytics
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 and Java branding throughout the site.
  3. Comprehensive educational and community resources for Java developers.
  4. No direct contact emails or phone numbers found on the site.
  5. No explicit privacy or security policy pages hosted on the domain, but linked to Oracle's official policies.
  6. Use of modern web technologies and CDN-hosted libraries with integrity checks.
  7. Minimal user tracking with privacy-respecting analytics (Fathom).
  8. No cookie consent banner detected despite use of analytics.
  9. No vulnerability disclosure or security.txt file found.
  10. No visible security headers detected in provided data.
Technical notes

Notes

The website is built with a modern and robust technology stack including Bootstrap for responsive design, Algolia for search functionality, and jQuery for DOM manipulation. The use of CDN-hosted resources with integrity attributes enhances security. Performance is optimized with fast loading times and mobile responsiveness. The site lacks a CMS, indicating a custom or static site approach. SEO is well addressed through meta tags and Open Graph data. Accessibility features such as skip links and ARIA attributes are present, improving usability. Hosting details are not explicit but likely enterprise-grade given Oracle's involvement. Opportunities exist to improve technical security configurations and add structured data for enhanced search presence.
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. 63/100Medium35 findingsView report
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