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Security report for vattenfall.de

Vattenfall · Energy · Germany

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

80/100

Risk levelLow

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

Vattenfall.de is the official German website of Vattenfall, a major European energy company specializing in green electricity, gas, solar energy, and heat pump solutions. The site targets German consumers seeking sustainable energy options and positions itself as a reliable energy supplier with high customer satisfaction. Technically, the website employs modern web technologies including Vue.js and Swiper.js for interactive components, uses custom fonts, and implements SEO best practices such as Open Graph meta tags. The site is mobile-optimized and presents a professional design with consistent branding. Security-wise, the site uses HTTPS and domain verification mechanisms but lacks explicit security headers and published security policies. No privacy or cookie policies were detected in the provided content, indicating potential compliance gaps. WHOIS data confirms the domain is legitimately owned by the Vattenfall group, with consistent nameservers and no privacy protection, supporting high trustworthiness. Overall, the website is professional and credible but would benefit from enhanced privacy disclosures and security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 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

2 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 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. 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 Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching vattenfall.de

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
82
Security headers
65
Email security
72
DNS health
70
Network security
100
GDPR outside view
88
Average
80

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention vattenfall.de, from OffSeq Breach.

Total records
28,944
Employees
0
Customers
28,885
Third parties
59
Weak passwords
7%

38 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for vattenfall.de.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Vattenfall operates as a large enterprise in the energy sector, focusing on renewable and sustainable energy solutions for the German market. Its business model centers on supplying green electricity, gas, and energy-related products like solar panels and heat pumps. The company leverages its strong brand and parent company backing (Vattenfall AB) to maintain market leadership. The website content and structure indicate a customer-centric approach targeting residential and commercial energy consumers. The absence of explicit contact details and privacy policies in the analyzed content suggests areas for improvement in customer engagement and regulatory compliance. The domain and technical infrastructure reflect a mature digital presence with potential for further enhancements in security and privacy practices.

Security posture

The website demonstrates a moderate security posture with HTTPS enforced and domain verification via Google and Facebook meta tags. However, the absence of visible security headers such as Content-Security-Policy, X-Frame-Options, and others reduces the overall security robustness. No vulnerability disclosures or incident response contacts are published, limiting transparency. Forms and input handling details are not fully visible, so secure data handling cannot be confirmed. The WHOIS data aligns with the corporate entity, reducing risk of domain spoofing or phishing. To improve security maturity, the company should implement comprehensive security headers, publish security policies, and establish vulnerability disclosure mechanisms.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with GDPR compliance details.
  2. Implement and verify security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Add a vulnerability disclosure policy or security.txt file to enhance transparency and trust.
  4. Include clear contact information including emails and phone numbers for customer and security inquiries.
  5. Enhance accessibility features to meet recognized standards and improve user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Vattenfall
Description
Vattenfall als zuverlässiger Ökostrom, Gas, Solar und Wärmepumpen Anbieter ist ausgezeichnet für höchste Kundenzufriedenheit. Jetzt wechseln!
Key services
Ökostrom (green electricity), Gas supply, Solar energy solutions, Wärmepumpen (heat pumps)
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Swiper.js (version 11.0.5 for sliders), Custom fonts (woff2), Preloading fonts, Open Graph meta tags
Frameworks
Vue.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS usage (implied by canonical URL https://www.vattenfall.de)
  • Google and Facebook domain verification meta tags

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
Google site verification, Facebook domain verification
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 branded for Vattenfall Germany
  2. Content is in German language targeting German consumers
  3. No explicit privacy, cookie, or terms of service pages detected in provided content
  4. No contact emails or phone numbers explicitly found in provided HTML snippet
  5. Use of modern web technologies and fonts
  6. No signs of WAF or blocking mechanisms
  7. WHOIS data consistent with corporate ownership
Technical notes

Notes

The website uses a modern front-end stack with Vue.js components and Swiper.js for interactive sliders. Fonts are optimized with preloading and woff2 formats. Meta tags for SEO and social sharing are well implemented. The site appears mobile responsive and uses CSS flexbox layouts extensively. However, no CMS or hosting provider information is directly visible. Performance is likely moderate given the use of multiple CSS and JS files but no explicit performance metrics are available. Accessibility is basic with some focus-visible styles but could be improved. No major technical debt or outdated libraries were detected 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

Earlier scans of this domain

  1. 79/100Low26 findingsView report
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