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Security report for entsog.eu

ENTSOG AISBL · Energy · Belgium

Low risk. 3 critical or high findings in Security headers and GDPR outside view.

Security score

79/100

Risk levelLow

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

ENTSOG AISBL is a European non-profit association established in 2009 to coordinate national gas transmission system operators (TSOs) across Europe. It plays a critical role in facilitating cooperation to meet EU energy and climate goals, particularly focusing on the energy transition and net-zero decarbonisation by 2050. The organization provides key services including data transparency platforms, infrastructure mapping, network codes, and security of supply simulations. The website reflects a mature digital presence with professional design and comprehensive content targeting energy stakeholders and policy makers. Technically, the website is built on Drupal 10 with modern front-end libraries such as Bootstrap, Swiper.js, and Font Awesome. It integrates Google Tag Manager for analytics and uses Elfsight widgets for social media feeds. The site is mobile optimized and accessible, with good SEO practices. Security posture is solid with HTTPS enforced and cookie consent implemented, though explicit security headers and vulnerability disclosure mechanisms are absent. Overall, the security posture is good with no visible vulnerabilities or exposed sensitive data. The domain WHOIS data is privacy protected under EURid policy, which is justified for this type of organization. The website is trustworthy, professional, and compliant with GDPR requirements. Strategic recommendations include enhancing security headers, publishing a security policy, and implementing a vulnerability disclosure program to further strengthen trust and security. This assessment indicates a well-established, credible organization with a strong digital footprint and a good security baseline, suitable for its role in the European energy sector.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

3 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 Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching entsog.eu

This scan found 16 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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  • 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
90
Security headers
40
Email security
85
DNS health
85
Network security
100
GDPR outside view
73
Average
79

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

ENTSOG holds a key position in the European energy market as the coordinating body for gas TSOs. Its business model is non-profit and focused on regulatory compliance, data transparency, and infrastructure coordination. The organization benefits from strong partnerships with EU institutions and member TSOs, leveraging data platforms and dashboards to provide transparency and support decision-making. The target customers include policy makers, energy companies, and the public interested in energy transition. Growth indicators include continuous platform development and active stakeholder engagement. The partnership ecosystem is robust, with links to various European energy and infrastructure entities. The organization's operations are stable with a clear strategic focus on decarbonisation and energy security.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and cookie consent mechanisms aligned with GDPR. No security.txt or incident response information is published, which could improve transparency. No exposed sensitive data or vulnerable libraries were detected. The absence of explicit security headers such as Content Security Policy (CSP), HSTS, or X-Frame-Options is a minor gap. The site does not show signs of phishing or malware. Incident response readiness and vulnerability disclosure are not publicly documented, representing an area for improvement. Overall, the security culture appears professional but could benefit from enhanced transparency and formalized security policies.

Recommendations

  1. Implement and publish comprehensive security headers including CSP, HSTS, and X-Frame-Options.
  2. Develop and make publicly available a security policy and incident response plan.
  3. Establish a vulnerability disclosure program and publish a security.txt file.
  4. Enhance contact information visibility for security and incident reporting.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ENTSOG AISBL
Description
The European Network of Transmission System Operators for Gas (ENTSOG) facilitates cooperation between national gas transmission system operators (TSOs) to meet EU energy and climate goals, progressing towards net-zero decarbonisation by 2050.
Key services
Data transparency platforms, Infrastructure mapping, Network codes and guidelines, Security of supply simulations, Innovative projects platform
Content quality
excellent
Branding
consistent

Technology

Stack
Drupal 10, Bootstrap, Font Awesome, Google Fonts (Lato), Swiper.js, Owl Carousel, Modernizr, Elfsight widgets
Frameworks
Drupal CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Google Analytics (via Google Tag Manager)
Marketing tools
Elfsight widgets
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenge.
  2. Content is rich, professional, and well-structured.
  3. Strong focus on European gas transmission system coordination and energy transition.
  4. Multiple platforms and dashboards linked for transparency and data sharing.
  5. Social media presence on X, LinkedIn, Vimeo.
  6. No direct contact emails or phone numbers found on homepage; contact likely via dedicated contact page.
  7. Cookie consent and privacy policies are implemented and GDPR compliant.
  8. No explicit security.txt or vulnerability disclosure found.
  9. WHOIS data is privacy protected as per EURid policy.
Technical notes

Notes

The website is built on Drupal 10 CMS, leveraging modern front-end libraries such as Bootstrap, Swiper.js, and Font Awesome, ensuring a responsive and accessible user experience. Google Tag Manager is used for analytics integration, and Elfsight widgets provide social media feeds. The site is mobile optimized and SEO friendly with proper meta tags and structured navigation. Performance is moderate, likely due to rich media content and multiple external widgets. Hosting provider details are not disclosed. Technical risks include reliance on third-party widgets and absence of some security headers. Opportunities exist to optimize performance and enhance security configurations.
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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