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Security report for cyberdefenders.org

CyberDefenders · Technology · N/a

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

73/100

Risk levelMedium

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

CyberDefenders is a well-established online cybersecurity training platform specializing in blue team skills for SOC analysts, threat hunters, and DFIR professionals. Founded in 2003, it offers a combination of subscription-based CyberRange labs and certification courses such as the Certified CyberDefender (CCD). The platform enjoys a strong market position supported by partnerships and endorsements from major industry players like Google, IBM, Microsoft, and others. The website is professionally designed with excellent content quality and clear navigation, targeting cybersecurity professionals seeking practical and up-to-date training.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

5 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

  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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching cyberdefenders.org

This scan found 19 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

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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
52
Security headers
45
Email security
87
DNS health
85
Network security
100
GDPR outside view
68
Average
73

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 business operates primarily in the technology sector, focusing on cybersecurity education and skill development. Its business model includes monthly/yearly subscriptions for labs and one-time payments for certification courses. The presence of trusted client logos and testimonials indicates a solid reputation and a broad user base. The company leverages modern web technologies and analytics tools to optimize user experience and monitor performance. However, the absence of explicit privacy and cookie policies, as well as incident response contacts, suggests areas for compliance improvement.

Security posture

The website enforces HTTPS with a strong SSL configuration and uses Cloudflare DNS services, enhancing security and performance. The domain registration is consistent and trustworthy, with no privacy protection masking ownership. Security best practices such as client transfer protection are in place. However, the lack of DNSSEC, security.txt, and explicit security or incident response policies on the website are gaps that could be addressed to strengthen the security posture. Monitoring and analytics tools like New Relic are used, but no vulnerabilities or exposed sensitive data were detected in the analysis.

Recommendations

  1. Enable DNSSEC to improve DNS security and prevent spoofing.
  2. Publish comprehensive privacy and cookie policies with clear consent mechanisms to enhance GDPR compliance.
  3. Add a security.txt file and a vulnerability disclosure policy to facilitate responsible reporting.
  4. Provide explicit incident response contact information to improve transparency and trust.
  5. Implement additional security headers such as Content-Security-Policy and X-Frame-Options to harden the website.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CyberDefenders
Description
CyberDefenders provides hands-on cybersecurity training and certification with CCD and ongoing skill development through CyberRange labs, offering practical learning beyond theory.
Key services
Blue team training courses, Certified CyberDefender certification, CyberRange labs for practical skill development, Enterprise security training
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, New Relic monitoring, Bootstrap, jQuery, Lite YouTube Embed, Cloudflare DNS, Jam.dev recording scripts
Frameworks
Bootstrap
Platforms
Web platform
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Use of Cloudflare DNS
  • No DNSSEC enabled (recommend enabling)
  • Use of security monitoring scripts (New Relic)

Analytics and tracking

Services
Google Analytics, New Relic
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Google Analytics (gtag.js), New Relic
Marketing tools
Jam.dev session recording
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 detected.
  2. No explicit privacy or cookie policies found on the main page.
  3. Strong branding and consistent design with professional appearance.
  4. Use of modern web technologies and performance optimizations.
  5. No direct contact emails or phone numbers found on the main page.
  6. Multiple trusted client logos and testimonials enhance credibility.
  7. Use of Google Analytics and New Relic for monitoring and analytics.
  8. No security.txt or vulnerability disclosure policy detected.
  9. No explicit incident response or security contact information found.
Technical notes

Notes

The website uses a modern technology stack including JavaScript frameworks, Bootstrap for responsive design, and New Relic for performance monitoring. Hosting and DNS are managed via Cloudflare, ensuring fast and reliable delivery. The site is mobile-optimized with good accessibility and SEO practices. Performance is fast with preloading and asynchronous script loading. There is no detected CMS, suggesting a custom or static site architecture. The technical implementation is robust, but opportunities exist to enhance security headers and formalize privacy compliance.
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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