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Security report for naturstrom.de

naturstrom AG · Energy · Germany

High risk. 7 critical or high findings in Network security, Security headers and 1 other check.

Security score

49/100

Risk levelHigh

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

Naturstrom AG operates as a renewable energy provider in Germany, offering green electricity, green gas, heating solutions, and electric mobility services. The company positions itself as a leading supplier in the sustainable energy sector with a broad product portfolio aimed at private customers and businesses committed to the energy transition. The website reflects a mature digital presence with a professional design and clear messaging focused on sustainability and customer engagement. Technically, the website is built on TYPO3 CMS and integrates modern analytics and consent management tools such as Matomo, Etracker, and Cookiebot. The site demonstrates good mobile optimization, accessibility, and SEO practices, ensuring a positive user experience across devices. Hosting is provided by Schlundtech, a reputable German hosting provider, supporting the site's performance and reliability. From a security perspective, the site enforces HTTPS and employs consent-based loading of tracking scripts, respecting user privacy and GDPR requirements. However, explicit security policies and incident response contacts are not published, which could be improved to enhance transparency and trust. No critical vulnerabilities or suspicious patterns were detected in the analysis. Overall, Naturstrom.de presents a trustworthy and professional online presence with strong privacy compliance and a solid technical foundation. Strategic improvements in security policy disclosure and contact information could further strengthen its credibility and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

7 findings rated critical or high. Fix these first.

  1. 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
    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL 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

  2. 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"

    • 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 naturstrom.de

This scan found 26 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
82
Security headers
20
Email security
60
DNS health
70
Network security
0
GDPR outside view
95
Average
55
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

Naturstrom AG is positioned as an essential entity in the German renewable energy market, focusing on sustainable electricity and gas supply. Its business model revolves around providing eco-friendly energy solutions to environmentally conscious consumers and businesses. The company leverages partnerships with analytics and marketing service providers to optimize customer engagement and marketing effectiveness. The absence of explicit contact details on the homepage suggests a possible focus on digital self-service or contact via other channels. The website's content and structure indicate a medium-sized enterprise with a clear commitment to sustainability and energy transition, supported by consistent branding and comprehensive service offerings.

Security posture

The website demonstrates a good security posture with mandatory HTTPS usage and integration of a robust cookie consent mechanism via Cookiebot, ensuring GDPR compliance. Analytics tools respect Do Not Track signals and load conditionally based on user consent, reflecting privacy-aware practices. However, the lack of published security policies, incident response contacts, and explicit security headers suggests room for improvement in transparency and defense-in-depth measures. No exposed sensitive data or vulnerable libraries were detected. The overall security maturity is moderate to good, suitable for a commercial energy provider but could benefit from enhanced documentation and proactive security disclosures.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and controls.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and document security headers like Content-Security-Policy (CSP), X-Frame-Options, and HSTS.
  4. Regularly audit third-party scripts and dependencies to mitigate potential vulnerabilities.
  5. Enhance user trust by adding visible contact details and certifications related to security and privacy.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
naturstrom AG
Description
Strom und Gas aus nachhaltiger Öko-Energie. Größtes Angebot für Ökostrom, Ökogas, Wärme, E-Mobilität, x-fach ausgezeichnet. Jetzt zur Energiewende.
Key services
Ökostrom (green electricity), Ökogas (green gas), Wärme (heating), E-Mobilität (electric mobility)
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, JavaScript, Matomo Analytics, Etracker, Cookiebot
Frameworks
TYPO3
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by canonical URL https://www.naturstrom.de/)
  • Cookie consent management with Cookiebot
  • Do Not Track respected in Matomo
  • Consent-based loading of tracking scripts

Analytics and tracking

Services
Matomo, Etracker, Google Analytics (via Tag Manager)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Awin, Google, Microsoft
Tracking pixels
Cookiebot pixel, Etracker pixel, Matomo pixel, Google Ads pixel, Bing Ads pixel
Marketing tools
Cookiebot, Matomo, Etracker
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured
  2. Strong focus on privacy compliance with Cookiebot and GDPR adherence
  3. Use of multiple analytics and marketing tools with consent management
  4. No explicit contact emails or phone numbers found in HTML content
  5. No explicit security or incident response policies published
  6. WHOIS data is minimal but consistent with hosting provider and business sector
Technical notes

Notes

The website is powered by TYPO3 CMS, a mature and extensible content management system suitable for enterprise use. It employs modern JavaScript libraries and integrates multiple analytics platforms (Matomo, Etracker, Google Tag Manager) with consent management via Cookiebot. Hosting is managed by Schlundtech, a German hosting provider, ensuring regional compliance and performance. The site is mobile-optimized with responsive CSS and accessibility features. Performance is moderate, with compressed CSS and JS assets. SEO is supported by comprehensive meta tags including Open Graph and Twitter cards. Technical risks are minimal but could be reduced further by tightening security headers and minimizing third-party script exposure.
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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