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Security report for rederijgroen.nl

Rederij Groen · Energy · Netherlands

High risk. 9 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

33/100

Risk levelHigh

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

Rederij Groen is a well-established Dutch offshore shipping and service company specializing in various types of support vessels including seismic supply, guard vessels, and crew tenders. Founded in 1973, the company has grown to operate a modern fleet serving global offshore energy clients. The website reflects a mature business with clear service offerings, a detailed company history, and recognized ISO certifications that emphasize quality, safety, and environmental responsibility. Technically, the site is built on WordPress with modern plugins and includes Google Analytics for visitor tracking. Security posture is good with HTTPS enforced and no visible vulnerabilities, though some security headers could be improved. Privacy compliance is basic but includes a cookie consent banner and a privacy policy. Overall, the site is professional, trustworthy, and well-aligned with the company’s business profile.

Scanned

NIS2 and GDPR posture

GDPR outside view
28/ 100 · High
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

9 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

  2. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  3. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  4. 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"

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

Keep watching rederijgroen.nl

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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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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
0
Security headers
15
Email security
85
DNS health
70
Network security
0
GDPR outside view
28
Average
33

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 · found on this site
  • 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 company holds a strong position in the offshore energy sector, offering specialized vessel services that support seismic surveys and offshore operations. Their business model focuses on fleet ownership and subcontractor management, providing flexible and global service deployment. The presence of ISO certifications and a dedicated QHSE policy indicates a commitment to high operational standards. The website content and structure support a medium-sized enterprise targeting offshore energy companies and maritime service clients. The company’s history and continuous fleet modernization suggest stable growth and market relevance.

Security posture

Rederij Groen demonstrates a solid security foundation with HTTPS enabled and no exposed sensitive information. The use of ISO 9001, 14001, and 45001 certifications further supports their commitment to quality and safety management. However, the website lacks explicit security headers such as Content-Security-Policy and X-Frame-Options, which could enhance protection against common web attacks. No incident response or vulnerability disclosure policies are published, which could be areas for improvement. The cookie consent mechanism indicates awareness of privacy regulations but could be enhanced for full GDPR compliance. Overall, the security posture is good but can be strengthened with additional best practices.

Recommendations

  1. Implement comprehensive security headers including CSP, X-Frame-Options, and X-Content-Type-Options to improve web security.
  2. Publish an incident response and vulnerability disclosure policy to enhance transparency and readiness.
  3. Regularly update all WordPress plugins and libraries to mitigate potential vulnerabilities.
  4. Enhance cookie consent and privacy mechanisms to ensure full GDPR compliance and user control.
  5. Improve accessibility features to broaden usability and meet compliance standards.

Contact details published on the site

Addresses
Legal name
Rederij Groen
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Rederij Groen
Description
Rederij Groen is a shipping and service company specializing in offshore support vessels including seismic supply, guard vessels, support vessels, crew tenders, platform supply vessels (PSV), and anchor handling tug supply vessels (AHTS). Founded in 1973, the company operates worldwide with a focus on high quality standards, safety, and environmental protection.
Key services
Seismic Supply, Support Vessels, Guard Vessels, Crew Tender, Platform Supply Vessels, AHTS Vessels
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.1, PHP, jQuery 3.7.1, Google Analytics, Slider Revolution, WPBakery Page Builder, Ultimate VC Addons
Frameworks
WordPress CMS
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML
  • Use of security-focused ISO certifications
  • Cookie consent banner implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and well-structured
  2. Content is comprehensive about company history, services, and certifications
  3. Contact information is clear and complete
  4. Use of modern WordPress plugins and technologies
  5. Cookie consent and privacy policy present indicating GDPR awareness
  6. No signs of blocking or security challenges
  7. ISO certifications reinforce quality and security posture
Technical notes

Notes

The website is built on a modern WordPress platform using popular plugins such as WPBakery Page Builder and Slider Revolution, which provide rich content presentation capabilities. Google Analytics and Google Tag Manager are used for analytics and marketing tracking. The site is mobile responsive with good SEO meta tags and Open Graph data for social sharing. Performance is moderate, with some room for optimization. The technical stack is standard for corporate websites, offering ease of maintenance but requiring vigilance on plugin updates to avoid security risks. Hosting provider details are not explicit, which could be clarified for operational transparency.
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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