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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

79/100

Risk levelLow

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

Vattenfall.de is the official German website of Vattenfall, a major European energy provider specializing in renewable energy sources such as green electricity, gas, solar, and heat pumps. The website targets general consumers in Germany seeking sustainable energy solutions and emphasizes high customer satisfaction. Technically, the site employs modern frontend technologies including Vue.js and Swiper.js, and integrates a GDPR-compliant cookie consent mechanism via OneTrust. While the site is well-designed, mobile-optimized, and SEO-friendly, explicit privacy policies, terms of service, and security policies are not evident in the provided content. Security posture is moderate with HTTPS implied but lacking visible security headers or vulnerability disclosures. WHOIS data confirms the domain's legitimacy and consistency with the Vattenfall brand. Overall, the site is professional and trustworthy but could improve transparency around privacy and security policies.

Scanned

This is an earlier scan of vattenfall.de. View the latest report

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 17 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
70
DNS health
70
Network security
100
GDPR outside view
88
Average
79

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 an essential entity in the energy sector, focusing on renewable energy products and services in Germany. The business model revolves around supplying green electricity, gas, and related energy solutions to residential and commercial customers. The company holds a strong market position as a large enterprise with a parent company Vattenfall AB. The website content and branding reflect a consistent and professional approach, targeting environmentally conscious consumers. The absence of direct contact details and detailed legal policies on the site suggests a potential area for customer engagement improvement. The integration of OneTrust indicates compliance efforts with European data protection regulations. No suspicious domains or partners were identified, reinforcing the company's established market presence.

Security posture

The website demonstrates a basic to moderate security posture. HTTPS is enforced as indicated by canonical URLs, and cookie consent is managed through a reputable third-party service (OneTrust). However, the absence of visible security headers such as Content-Security-Policy, X-Frame-Options, and others reduces the overall security robustness. No vulnerability disclosure or incident response information is provided, which could hinder timely reporting and mitigation of security issues. No exposed sensitive data or vulnerable libraries were detected in the provided content. The site would benefit from publishing a security policy, implementing additional HTTP security headers, and providing clear incident response contacts to enhance trust and compliance.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service accessible from the homepage footer.
  2. Implement and configure HTTP security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Provide a publicly accessible security policy and incident response contact information (e.g., security@ or abuse@ email).
  4. Add a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  5. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
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, Gas, Solar, Wärmepumpen
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, OneTrust cookie consent, Swiper.js slider
Frameworks
Vue.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (implied by canonical URL https://www.vattenfall.de)
  • Cookie consent mechanism implemented

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
OneTrust
Marketing tools
OneTrust cookie consent
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-branded for Vattenfall energy services in Germany.
  2. Cookie consent is implemented via OneTrust, indicating GDPR awareness.
  3. No explicit privacy policy or terms of service links found in the provided HTML snippet.
  4. No direct contact information (email, phone, address) found in the provided content.
  5. No security.txt or vulnerability disclosure information detected.
  6. WHOIS data supports legitimacy and consistency with the brand.
  7. No WAF or blocking detected; content fully accessible.
  8. Use of modern frontend technologies including Vue.js and Swiper.js.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website uses modern web technologies such as Vue.js for frontend rendering and Swiper.js for interactive sliders, indicating a contemporary and responsive design approach. The presence of OneTrust scripts shows GDPR compliance efforts. The site loads fonts and stylesheets from static subdomains, suggesting a CDN or optimized asset delivery. However, no CMS or hosting provider information was explicitly detected. Performance is moderate with good mobile optimization and basic accessibility features. SEO is supported by proper meta tags and Open Graph data. Technical debt appears low, but the lack of visible security headers and explicit privacy/legal documents indicates areas for technical and compliance improvements.
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. 80/100Low25 findingsView report
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