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Security report for cozero.io

Cozero · Technology · Germany

Medium risk. 6 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

66/100

Risk levelMedium

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

Cozero is a Berlin-based ClimateTech company founded in 2020, providing an integrated carbon accounting and climate management platform designed to help enterprises measure, reduce, and report their carbon emissions efficiently. The company targets sustainability stakeholders across industries such as logistics, manufacturing, and transportation, offering modules for data collection, decarbonization planning, and reporting. The website demonstrates a professional and modern digital presence with multi-language support and strong branding consistency. Technically, the site leverages Webflow CMS, modern JavaScript libraries like Swiper.js, and privacy-focused analytics via Plausible, indicating a mature digital infrastructure. Security posture is good with HTTPS enforced and no visible vulnerabilities, though the absence of explicit security policies and WHOIS data limits full trust verification. Overall, Cozero presents as a credible and professional business with a strong focus on sustainability and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 100 · Medium
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

6 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 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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

  3. 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
    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 12 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

Keep watching cozero.io

This scan found 26 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
62
Security headers
60
Email security
60
DNS health
60
Network security
100
GDPR outside view
53
Average
66

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 cozero.io, from OffSeq Breach.

Total records
4
Employees
0
Customers
4
Third parties
0
Weak passwords
0%

1 subdomain 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 cozero.io.

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

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Technical appendix

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

Business context

Business profile

Cozero occupies a specialized niche in the ClimateTech market, focusing on carbon management software for enterprises. Its competitive advantage lies in offering an end-to-end platform that integrates carbon accounting, decarbonization strategy, and reporting, tailored for complex sectors. The company has established trust through industry awards and customer testimonials from recognized brands. Its business model is SaaS-based, targeting medium to large enterprises with sustainability mandates. The presence of API integrations and supplier engagement modules suggests a scalable and extensible platform. Partnerships with documentation and support platforms enhance customer experience. Growth indicators include multi-language support and a visible career site, signaling expansion. The company’s market positioning is reinforced by its focus on regulatory compliance and scientific standards alignment.

Security posture

The website enforces HTTPS and uses modern web technologies with no exposed sensitive data or vulnerable libraries detected. However, it lacks published security policies, incident response plans, or vulnerability disclosure mechanisms, which are important for transparency and trust. No security headers were detected in the provided data, suggesting room for improvement in hardening the web server configuration. The absence of direct contact emails or phone numbers for security or abuse reporting reduces responsiveness potential. Overall, the security maturity is moderate, with good technical implementation but lacking formalized security governance disclosures.

Recommendations

  1. Implement and publish a comprehensive security policy and incident response plan on the website.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to enhance protection.
  3. Publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Provide clear contact channels for security incidents, including dedicated security or abuse email addresses.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Cozero
Description
Cozero provides carbon accounting and climate management software solutions to help enterprises measure, reduce, and report corporate and product emissions efficiently. The platform supports sustainability stakeholders in improving carbon accounting and decarbonization efforts across complex sectors.
Key services
Carbon emissions accounting, Decarbonization strategy planning, Emission reporting and climate disclosure, Supplier engagement for Scope 3 data, API integration
Content quality
excellent
Branding
consistent

Technology

Stack
Webflow, Swiper.js, Plausible Analytics, Finsweet Attributes
Platforms
Webflow CMS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of async and defer for scripts

Analytics and tracking

Services
Plausible Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Plausible Analytics
Marketing tools
Plausible Analytics
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 rich content and no blocking.
  2. Strong focus on carbon accounting and climate management solutions.
  3. Multiple language support (English, German, French).
  4. Use of modern web technologies and analytics with privacy focus.
  5. No direct contact emails or phone numbers publicly listed; contact via form.
  6. No explicit security or incident response policies found.
  7. WHOIS data unavailable, limiting domain trust verification.
Technical notes

Notes

The website is built on Webflow CMS, utilizing modern JavaScript libraries like Swiper.js for UI components and Plausible Analytics for privacy-conscious user tracking. The site is well-optimized for performance and mobile responsiveness, with good SEO practices including meta tags and Open Graph data. The use of async and defer attributes on scripts improves loading times. The hosting is managed by Webflow, a reputable provider. There is no evidence of technical debt or outdated technologies. Opportunities exist to enhance security headers and formalize security governance documentation to reduce technical risks.
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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