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Security report for huelskens-sediments.de

Hülskens Sediments GmbH · Energy · Germany

High risk. 7 critical or high findings in GDPR outside view, Network security and 2 other checks.

Security score

49/100

Risk levelHigh

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

Hülskens Sediments GmbH is a specialized technology company focused on sustainable sediment management solutions for reservoirs and impoundments. Their patented ConSedTrans® system enables continuous, automated sediment removal without disrupting water storage functions such as drinking water supply and energy generation. The company positions itself as an innovative niche player with recognized technology and strong environmental compliance. Technically, the website is built on the Contao CMS platform, uses modern JavaScript libraries like jQuery and Swipe.js, and is hosted on agenturserver infrastructure. The site is well-structured, mobile-optimized, and GDPR compliant with a clear cookie consent mechanism. Security posture is good with HTTPS enforced and no visible vulnerabilities, though some HTTP security headers could be improved. Overall, the domain registration and WHOIS data align well with the business claims, indicating legitimacy and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
43/ 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

7 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

    • 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

  2. 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

  3. 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';…

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Keep watching huelskens-sediments.de

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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
72
Security headers
65
Email security
65
DNS health
60
Network security
0
GDPR outside view
43
Average
51
After the cap
49

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 targets operators of reservoirs and water bodies requiring sediment management, offering a full-service model including consulting, equipment manufacturing, project management, and maintenance. Their patented technology and award nominations provide competitive advantages. The business is part of the larger Hülskens Holding group, which offers broader career and development opportunities. The website content is professional and consistent, supporting a small-sized enterprise focused on energy and environmental technology sectors. Partnerships with research entities like SedimentWorks enhance innovation capabilities.

Security posture

The website demonstrates a mature security posture with HTTPS enabled and a GDPR-compliant cookie consent banner. No incident response or security policy information is publicly available, which is a minor gap. No exposed sensitive data or vulnerable libraries were detected. The absence of HTTP security headers such as Content Security Policy or HSTS reduces the security score slightly. No analytics or tracking scripts were found, minimizing privacy risks. Overall, the security risk is low but could be improved by adding explicit security policies and headers.

Recommendations

  1. Implement HTTP security headers including Content Security Policy, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish a clear security policy and incident response contact information to improve transparency and trust.
  3. Add a terms of service page to clarify user and business legal terms.
  4. Consider integrating privacy-friendly analytics to gain insights while maintaining user privacy.
  5. Regularly audit and update CMS and third-party libraries to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
Hülskens Sediments GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Hülskens Sediments GmbH
Description
Hülskens Sediments GmbH is a technology expert specializing in sediment removal (Entsedimentierung) from reservoirs and impoundments to prevent silting and maintain sustainable sediment management for water storage used in drinking water supply, energy generation, flood protection, and water level regulation.
Key services
Sediment removal technology and equipment, Project planning and consulting, Project management and maintenance services, Patent-protected sediment transport system, Online process monitoring and documentation
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Swipe.js
Frameworks
Contao Open Source CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner with opt-in
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected in provided scripts

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is in German with multilingual support (Spanish and English).
  3. Uses Contao CMS with custom scripts and standard libraries.
  4. Clear cookie consent mechanism compliant with GDPR.
  5. No visible email addresses on homepage; contact likely on contact page.
  6. Phone number and physical address clearly displayed in footer.
  7. No social media links detected in provided content.
  8. No explicit security policy or incident response info found.
  9. No terms of service page detected.
  10. No analytics or tracking scripts detected in provided HTML.
Technical notes

Notes

The website uses Contao CMS, a well-established open-source content management system, combined with jQuery and Swipe.js for interactive elements. The hosting is managed via agenturserver, indicated by the nameservers. The site is mobile-optimized and uses responsive images. Performance is moderate, with no major issues detected. Accessibility is basic but could be improved with enhanced ARIA roles and keyboard navigation support. SEO is good with proper meta tags and hreflang attributes for multilingual support. No broken links or errors were found in the provided content.
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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