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Security report for city-use.de

City-USE GmbH & Co. KG · Energy · Germany

High risk. 3 critical or high findings in Network security, Security headers and 1 other check.

Security score

49/100

Risk levelHigh

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

City-USE GmbH & Co. KG is a well-established cooperative energy partner based in Germany, specializing in providing tailored energy procurement and management solutions to municipal utilities. Founded in 1999, the company operates a certified data center and offers a broad portfolio of services including electricity and gas procurement, hosting, energy data management, and consulting on legal and technical topics. Their strong network of 16 municipal shareholders in the Unterfranken region positions them as a trusted regional player in the energy sector. Technically, the website is built on the Webflow platform, leveraging modern web technologies such as Google Fonts, jQuery, GSAP animations, and accessibility tools like Eye-Able. The site demonstrates good mobile optimization, accessibility, and SEO practices. Cookie consent mechanisms and GDPR-compliant privacy policies are implemented effectively, reflecting a mature digital presence. From a security perspective, the site uses HTTPS with good SSL configuration and employs cookie consent with opt-in. However, explicit security headers are not detected, and no dedicated security or incident response policies are published. No vulnerabilities or exposed sensitive data were found in the HTML content. The WHOIS data aligns well with the business claims, showing consistency and legitimacy. Overall, the website presents a professional, trustworthy, and compliant digital front for City-USE GmbH & Co. KG. Strategic improvements in security headers and incident response transparency could further enhance their security posture and trustworthiness.

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

3 findings rated critical or high. Fix these first.

  1. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  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 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';…

  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

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

Keep watching city-use.de

This scan found 23 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
72
Security headers
50
Email security
70
DNS health
65
Network security
0
GDPR outside view
83
Average
57
After the cap
49

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 · found on this site
  • 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

City-USE operates in the energy sector focusing on municipal utilities, providing procurement, data center services, and consulting. Their cooperative business model leverages a network of regional municipal shareholders, enabling them to manage significant energy volumes and offer tailored solutions. The company targets small to medium-sized municipal energy providers and private companies seeking innovative and climate-friendly energy solutions. Growth is indicated by an increase in staff from 4 to around 40 employees. The partnership ecosystem includes multiple regional municipal utilities, enhancing their market reach and service capabilities. Their business model emphasizes collaboration, regional focus, and comprehensive service offerings, positioning them competitively in the regional energy market.

Security posture

The website demonstrates a moderate to good security maturity level. HTTPS is enforced with strong SSL configuration, and cookie consent is implemented with an opt-in mechanism, supporting GDPR compliance. The use of third-party scripts is from reputable sources, and no sensitive data is exposed in the HTML. However, the absence of explicit security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options represents a gap in defense-in-depth. No incident response or security contact information is provided, which could hinder timely vulnerability reporting and response. Overall, the security posture is adequate for the business type but could be improved by adopting additional security best practices and transparency measures.

Recommendations

  1. Implement standard security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) to enhance protection against common web attacks.
  2. Publish a dedicated security policy and provide clear incident response contact channels to improve transparency and readiness.
  3. Regularly audit and update third-party scripts and dependencies to mitigate potential vulnerabilities.
  4. Enhance user trust by providing more visible trust indicators such as certifications or testimonials on the website.
  5. Consider creating and publishing a security.txt file to facilitate responsible vulnerability disclosure.

Contact details published on the site

Addresses
Legal name
City-USE GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
City-USE GmbH & Co. KG
Description
City-USE GmbH & Co. KG is a cooperative energy partner for municipal utilities, offering tailored solutions from electricity and gas procurement to operating their own data center. They support partners with sales and legal topics and manage a robust network of 16 municipal shareholders in Unterfranken, Germany.
Key services
Electricity and gas procurement, Operation of a certified data center, Hosting and administration services, Energy data management and meter reading, Consulting on IT security, data protection, and occupational safety, Support with contracts and market communication
Content quality
good
Branding
consistent

Technology

Stack
Webflow CMS, Google Fonts (Montserrat), jQuery 3.5.1, GSAP 3.11.4, ScrollTrigger, Finsweet Cookie Consent, Google Tag Manager (gtag.js), Eye-Able accessibility tools, TeamViewer support integration
Frameworks
Webflow
Platforms
Webflow hosting
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in mechanism
  • No exposed sensitive data in HTML
  • Use of remote scripts from trusted sources

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Google Analytics (via Google Tag Manager)
Marketing tools
Finsweet Cookie Consent
Transparency
good

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-structured.
  2. Content is focused on energy services for municipal utilities in Germany.
  3. Cookie consent and privacy policies are implemented with GDPR compliance.
  4. No security policy or incident response contact found on the site.
  5. Use of modern web technologies and accessibility tools.
  6. Contact information is complete and consistent.
  7. No signs of suspicious or malicious content.
  8. Social media presence on Instagram and Facebook.
  9. Support offered via TeamViewer remote assistance.
Technical notes

Notes

The website is built on the Webflow CMS platform, utilizing modern front-end technologies including Google Fonts, jQuery, and GSAP for animations and scroll-triggered effects. Accessibility is enhanced through integration with Eye-Able assistive tools. The site loads resources from trusted CDNs and uses Google Tag Manager for analytics. Performance is moderate, with good mobile responsiveness and SEO optimization. The technical implementation is clean with valid HTML and CSS, though there is room for improvement in security headers and incident response mechanisms. Hosting is via Webflow's cloud infrastructure, ensuring reliable uptime and scalability. Overall, the technical infrastructure supports the business needs effectively with opportunities for further modernization and security hardening.
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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