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Security report for gasag.de

GASAG AG · Energy · Germany

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

62/100

Risk levelMedium

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

GASAG AG is a well-established German energy company with a history dating back to 1847. The company provides a broad range of energy-related services including green electricity (Ökostrom), gas tariffs, solar solutions, heating, and mobility services such as electric vehicle charging. The website targets both private and business customers, emphasizing sustainability, fair pricing, and reliability. The company holds a strong market position in Berlin and Germany with a large customer base and a focus on renewable energy expansion. Technically, the website employs modern web technologies including JavaScript modules, Usercentrics for consent management, Google Tag Manager for analytics, and AB Tasty for A/B testing. Hosting is managed via Microsoft Azure DNS, indicating a robust infrastructure. The site is mobile-optimized, accessible, and SEO-friendly, providing a professional user experience. From a security perspective, the site uses HTTPS and integrates consent management, but lacks explicit security policies, incident response information, and vulnerability disclosure mechanisms. No critical vulnerabilities or exposed sensitive data were detected. The WHOIS data is consistent with the company's claims, showing a legitimate and longstanding domain registration. Overall, GASAG's website reflects a mature digital presence with good security and privacy practices, though improvements could be made by publishing comprehensive privacy and security policies and providing clearer contact information for data protection and incident response.

Scanned

NIS2 and GDPR posture

GDPR outside view
33/ 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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  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 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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  • 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
62
Security headers
50
Email security
65
DNS health
60
Network security
100
GDPR outside view
33
Average
62

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

Technical appendix

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

Business context

Business profile

GASAG AG operates in the energy sector, focusing on sustainable energy solutions for residential and commercial customers. Its competitive advantages include a long-standing market presence, a large customer base, and diversified offerings including electricity, gas, solar, heating, and mobility solutions. The business model centers on energy supply combined with consulting and customer service. Revenue streams likely include energy tariffs, installation and maintenance services, and partnerships such as referral programs. The company leverages partnerships (e.g., Urban Sports Club) and promotional platforms (GASAG DEALS) to enhance customer engagement. Growth indicators include emphasis on renewable energy and digital services like the MEINE GASAG app. The company maintains a consistent brand and professional online presence, supporting its market position.

Security posture

The website demonstrates a good security posture with HTTPS enforced and integration of a consent management platform (Usercentrics) to comply with privacy regulations. Use of Google Tag Manager and AB Tasty is controlled via consent mechanisms. No security headers were explicitly detected in the provided data, suggesting room for improvement. The absence of a published security policy, incident response plan, or vulnerability disclosure page indicates gaps in transparency and readiness. No vulnerabilities or exposed sensitive data were found in the HTML content. Overall, the security maturity is moderate to good but could be enhanced by adding explicit security documentation and headers.

Recommendations

  1. Publish a clear and comprehensive privacy policy and terms of service accessible from the homepage.
  2. Add explicit security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Provide a publicly accessible security policy and incident response contact information.
  4. Implement and publish a vulnerability disclosure policy or security.txt file.
  5. Enhance contact information by including verified company emails and phone numbers for customer and security inquiries.

Contact details published on the site

Addresses
Legal name
GASAG AG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
GASAG AG
Description
Das Traditionsunternehmen GASAG ist Teil der Stadtgeschichte Berlins. 1847 gegründet, ist die GASAG heute ein modernes, bundesweit agierendes Energiedienstleistungsunternehmen, zu dessen Angebot längst nicht mehr nur Strom und Erdgas zählen. Die Unternehmensgruppe setzt sich intensiv mit innovativen Technologien auseinander und treibt den Ausbau Erneuerbarer Energie voran.
Key services
Ökostrom tariffs, Gas tariffs, Solar solutions, Heating solutions, Mobility solutions (e.g., Wallbox charging), Customer service and energy consulting
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript (ES modules), Usercentrics CMP, Google Tag Manager, AB Tasty (A/B testing), Trustpilot widget
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Usercentrics for cookie consent
  • Google Tag Manager for controlled script loading
  • No exposed sensitive data detected in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Usercentrics, AB Tasty, Trustpilot
Marketing tools
AB Tasty, Usercentrics
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Strong focus on energy services with clear navigation and professional design.
  3. Use of modern consent management and analytics tools.
  4. No explicit privacy policy or terms of service links found in the provided HTML snippet.
  5. Contact information is partially available via address and customer service links but no direct emails or phone numbers found in the snippet.
  6. No explicit security or incident response policies published.
  7. Good SEO and accessibility practices observed.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website uses modern JavaScript modules and integrates third-party services for consent management, analytics, and A/B testing. Hosting on Microsoft Azure DNS suggests a reliable infrastructure. The site is well-optimized for mobile devices and accessibility, with good SEO practices including meta tags and structured data (JSON-LD). Performance is moderate, with preloading of critical assets and images. The technical stack is contemporary but could benefit from additional security headers and possibly a CMS identification. No technical debt or major risks were identified from the HTML 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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