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Security report for co2online.de

co2online · Energy · Germany

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

86/100

Risk levelLow

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

co2online is a German nonprofit organization providing independent and free energy saving advisory services focused on electricity, heating, and energy-efficient modernization. The website targets private households and individuals interested in climate protection and energy savings. It offers key services such as energy saving tips, funding information, and online energy checks. Technically, the site is built on TYPO3 CMS with modern web technologies and integrates a comprehensive accessibility tool (digi·access) supporting multiple languages, reflecting a strong commitment to inclusivity. Security posture is moderate with HTTPS usage implied but lacks explicit security headers and formal privacy or cookie policies. No contact information or incident response details are found in the provided content, which limits transparency. Overall, the site is professional, trustworthy, and well-structured but would benefit from enhanced privacy compliance and security disclosures.

Scanned

NIS2 and GDPR posture

GDPR outside view
85/ 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. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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. 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 co2online.de

This scan found 13 issues across 5 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • 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
100
Email security
87
DNS health
70
Network security
100
GDPR outside view
85
Average
86

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

The organization operates in the energy and nonprofit sectors, focusing on climate protection and energy efficiency. Its business model is non-commercial, providing free advisory services to end consumers. The website demonstrates consistent branding and good content quality, positioning co2online as a reputable advisory platform in Germany. Partnerships with digi·access and references to community sites like vierwende.de indicate a collaborative ecosystem. The absence of detailed company registration or founding year limits deeper business profiling. The target audience is primarily German-speaking private households seeking energy saving guidance.

Security posture

The website uses HTTPS and integrates accessibility enhancements, which are positive security indicators. However, no security headers (e.g., CSP, HSTS) were detected in the provided content, and there is no visible privacy or cookie policy, which are compliance gaps under GDPR. No incident response or security contact information is provided, reducing readiness transparency. The use of third-party scripts from trusted domains appears controlled, but continuous monitoring is recommended. Overall, the security posture is moderate but could be improved by implementing security headers, formal privacy documentation, and incident response contacts.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie consent mechanism to improve GDPR compliance.
  2. Add security headers such as Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-Content-Type-Options.
  3. Provide clear contact information including security incident response channels (e.g., security@ or abuse@ email addresses).
  4. Regularly audit third-party scripts and dependencies for vulnerabilities and update them accordingly.
  5. Enhance transparency by including company registration details and data protection officer contact information.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
co2online
Description
Strom, Heizen, energetische Modernisierung, Fördermittel + Infos zu Klimaschutz und Klimawandel. Wir helfen Ihnen: Unabhängig, kostenfrei, nicht-kommerziell.
Key services
Energiesparberatung, Informationen zu Strom, Heizen, energetische Modernisierung, Fördermittelberatung, Online Energiesparchecks (HeizCheck, StromCheck)
Content quality
good
Branding
consistent

Technology

Stack
TYPO3 CMS, JavaScript, SVG graphics, digi·access accessibility tool
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
excellent
SEO
good

Security

Observed score
75/100
Good practices seen
  • Use of HTTPS (implied by canonical URL https://www.co2online.de/)
  • No exposed sensitive data in HTML
  • Accessibility and usability enhancements

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
cloud.ccm19.de
Marketing tools
cloud.ccm19.de
Transparency
basic

Site quality

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

Key observations

  1. Website is a nonprofit energy saving advisory platform in Germany.
  2. Content is in German with multilingual accessibility tool supporting many languages.
  3. No explicit privacy, cookie, or terms of service pages found in provided content.
  4. Accessibility features are strongly emphasized via digi·access integration.
  5. No direct contact emails or phone numbers found in the provided HTML snippet.
  6. External scripts and stylesheets are loaded from trusted domains.
  7. No signs of adult or questionable content.
  8. WHOIS data is minimal but domain appears active and consistent.
Technical notes

Notes

The website is built on TYPO3 CMS, a mature and secure content management system, with modern JavaScript and SVG usage for graphics. Accessibility is a strong focus, evidenced by the integration of the digi·access tool offering multiple user profiles and customization options. Performance appears moderate with asynchronous script loading and module preloading. SEO is supported by meta tags and Open Graph data. The site is mobile optimized and uses responsive design. However, no explicit hosting provider or CDN information was found. Technical debt appears low, but the absence of security headers and privacy documentation suggests areas for modernization and compliance improvement.
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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