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Security report for co2.auto

co2.auto GmbH · Energy · Germany

Medium risk. 5 critical or high findings in Security headers, SSL/TLS and 1 other check.

Security score

67/100

Risk levelMedium

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

co2.auto GmbH operates a specialized platform in Germany facilitating the sale of THG-Quotas, enabling electric vehicle owners to monetize their CO2 emission reductions through annual bonuses. The company targets private individuals, fleet managers, and public charging station operators, positioning itself as a trusted intermediary between quota-obligated companies and electric mobility stakeholders. The website is professionally designed, content-rich, and provides comprehensive information about the THG-Quota system, registration process, and legal context. Technically, the site uses standard web technologies with moderate performance and good mobile optimization. Security posture is solid with HTTPS and encrypted session management, though improvements such as DNSSEC and security headers are recommended. Privacy compliance is well addressed with clear policies and cookie consent mechanisms. Overall, the business demonstrates credibility and trustworthiness with transparent WHOIS data and clear contact information.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

5 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 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';…
  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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048
  3. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Domain Expires Soon

      Domain expires in 12 days

      What to do: Renew domain registration before expiration

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

Keep watching co2.auto

This scan found 24 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.

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
75
Security headers
15
Email security
70
DNS health
60
Network security
100
GDPR outside view
83
Average
67

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 co2.auto, from OffSeq Breach.

Total records
29
Employees
0
Customers
29
Third parties
0
Weak passwords
10%

2 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 co2.auto.

Select it in the checkout above.

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

The company occupies a niche in the German energy and transportation sectors, leveraging regulatory frameworks to create value for electric vehicle owners. Its business model centers on quota brokerage and annual bonus payouts, simplifying complex regulatory compliance for end users. The presence of a partner domain for Austria indicates regional expansion or cooperation. The platform's competitive advantage lies in its ease of use, price guarantees, and official certification integration with the Umweltbundesamt. Revenue streams likely include fees or margins on quota sales. The company is relatively young (founded 2021) but well-positioned in the growing electric mobility market.

Security posture

The website enforces HTTPS and uses encrypted session cookies, ensuring secure data transmission and session integrity. Cookie consent is implemented with detailed categorization, supporting GDPR compliance. However, the absence of DNSSEC and security headers such as Content-Security-Policy or HSTS reduces the overall security robustness. No incident response or vulnerability disclosure information is provided, which could be improved to enhance transparency and readiness. No critical vulnerabilities or exposed sensitive data were detected. Overall, the security posture is good but could benefit from additional hardening and formal policies.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve domain security.
  2. Implement security headers including Content-Security-Policy, X-Frame-Options, and HTTP Strict Transport Security (HSTS).
  3. Publish a dedicated security policy page and provide incident response contact information to improve transparency and trust.
  4. Consider adding a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  5. Regularly review and update cookie and privacy policies to maintain compliance with evolving regulations and best practices.

Contact details published on the site

Addresses
Legal name
co2.auto GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
co2.auto GmbH
Description
co2.auto offers a platform for owners of pure electric vehicles in Germany to register and receive an annual CO2 bonus by selling their THG-Quota to quota-obligated companies. The service simplifies the process of quota sale and bonus payment, targeting private and commercial electric vehicle owners as well as public charging station operators.
Key services
THG-Quota registration and sale, Annual CO2 bonus payout, Fleet management offers, Public charging station bonus registration
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, jQuery, CSS, HTML5
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Session management with encrypted session identifiers
  • No exposed sensitive data in HTML
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Google Marketing Platform / DoubleClick
Marketing tools
Google Ads Conversion Tracking
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content in German language.
  2. Strong focus on electric vehicle owners and environmental incentives in Germany.
  3. Comprehensive FAQ and detailed explanations about THG-Quota and CO2 bonus.
  4. Clear legal and privacy documentation linked in footer.
  5. Cookie consent mechanism implemented with detailed cookie categories.
  6. No phone numbers explicitly provided on the site.
  7. Contact primarily via email and contact forms.
  8. No social media links detected.
  9. Use of structured data (JSON-LD) for SEO and rich snippet enhancement.
  10. No explicit security policy or incident response information found.
Technical notes

Notes

The website is built on a custom or proprietary CMS with standard HTML5, CSS, and JavaScript technologies including jQuery. It uses structured data (JSON-LD) for SEO enhancement and social sharing. Performance is moderate with good mobile responsiveness and basic accessibility features. The site includes a cookie consent mechanism with detailed cookie categories and third-party integrations such as Google Analytics and Google Ads for tracking and marketing. Hosting provider details are not explicitly identified. The site could improve by adopting modern frameworks or CMS platforms to enhance maintainability and scalability.
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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