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Security report for gasunie.nl

Gasunie · Energy · Netherlands

Low risk. 1 critical or high finding in SSL/TLS.

Security score

82/100

Risk levelLow

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

Gasunie is a leading Dutch energy infrastructure company specializing in the transport and storage of gas, including natural gas, green gas, and hydrogen. The company is actively transitioning towards sustainable energy solutions and manages extensive projects related to CO2, heat, and energy systems. The website reflects a mature digital presence with comprehensive business information, investor relations, and project details. Technically, the site uses modern CMS technology, responsive design, and integrates analytics while maintaining good privacy compliance. Security posture is solid with HTTPS and cookie consent mechanisms, though explicit security policies and incident response information are absent. Overall, Gasunie presents a professional, trustworthy, and well-structured online presence aligned with its market position.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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

1 finding rated critical or high. Fix these first.

  1. 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 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 gasunie.nl

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
75
Security headers
80
Email security
80
DNS health
75
Network security
100
GDPR outside view
83
Average
82

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

Gasunie operates in the energy and transport sectors, focusing on large-scale gas infrastructure in the Netherlands and Northern Germany. Its business model revolves around infrastructure management, consultancy, and development of new energy carriers like hydrogen and green gas. The company targets energy sector stakeholders, investors, suppliers, and the general public interested in energy transition. The website indicates a large enterprise with subsidiaries such as Hynetwork and a strong partnership ecosystem. The presence of detailed project portfolios and investor relations suggests transparency and growth orientation.

Security posture

The website demonstrates a good security maturity level with enforced HTTPS, cookie consent mechanisms, and no visible exposure of sensitive data. However, it lacks a dedicated security policy page, incident response contacts, and a vulnerability disclosure policy, which are important for comprehensive security governance. The use of third-party analytics is managed with privacy considerations. No critical vulnerabilities or security misconfigurations were detected in the provided data.

Recommendations

  1. Publish a dedicated security policy and incident response page to enhance transparency and preparedness.
  2. Implement and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Add explicit security headers such as Content-Security-Policy and X-Content-Type-Options to strengthen defense.
  4. Regularly review and audit third-party scripts and analytics tools for security and privacy compliance.
  5. Enhance user trust by providing more visible certifications or compliance badges related to security and privacy.

Contact details published on the site

Addresses
Legal name
Gasunie
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Gasunie
Description
Gasunie is a network company for energy. It manages and maintains infrastructure for large-scale transport and storage of gas in the Netherlands and Northern Germany. The company is transitioning from a gas transport company to an energy infrastructure enterprise, focusing on natural gas, green gas, hydrogen, heat, and CO2 networks.
Key services
Gas transport, Gas storage, Consultancy, Management of Title Transfer Facility (TTF), Development of hydrogen and green gas infrastructure, Heat and CO2 network management
Content quality
excellent
Branding
consistent

Technology

Stack
iWink CMS, Piwik PRO analytics, Swiper.js slider, Responsive images, JSON-LD structured data
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of analytics with IP tracking opt-in

Analytics and tracking

Services
Piwik PRO
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Piwik PRO
Marketing tools
Piwik PRO analytics
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 challenges.
  2. Comprehensive information about energy infrastructure and transition projects.
  3. Strong presence of privacy and cookie policies with consent mechanisms.
  4. Use of modern web technologies and analytics tools.
  5. Clear contact information including email, phone, and physical address.
  6. Active social media presence on major platforms.
  7. No signs of suspicious or malicious content.
Technical notes

Notes

The website is built on the iWink CMS platform and uses modern web technologies including responsive images, Swiper.js for sliders, and Piwik PRO for analytics. The site is mobile-optimized, accessible, and SEO-friendly with proper meta tags and structured data. Performance is moderate, with room for optimization. Hosting details are not explicit but the site uses secure HTTPS connections. The technical implementation supports a professional and user-friendly experience with good content organization and navigation.
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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