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Security report for duisburg.de

Stadt Duisburg · Government · Germany

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

Security score

63/100

Risk levelMedium

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

The website duisburg.de serves as the official digital portal for the city of Duisburg, Germany, providing residents and visitors with comprehensive information about city services, events, tourism, and administrative functions. It positions itself as a key government resource with a broad range of public service offerings and community engagement initiatives. The site demonstrates consistent branding and a professional presentation aligned with municipal government standards. Technically, the site is built on the Information Enterprise Server platform by Sitepark GmbH, utilizing modern web technologies including SVG icons, accessibility plugins, and JavaScript frameworks. The site is mobile optimized and includes accessibility features enhancing usability for diverse users. Security posture is solid with HTTPS enforced and no visible sensitive data exposure, though explicit security headers and privacy policies are not clearly present in the provided content. Analytics are conducted via Matomo, indicating moderate user tracking with some privacy compliance gaps. Overall, the site is trustworthy and well-maintained, though improvements in privacy transparency and security headers would enhance compliance and user trust.

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

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.

    • 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 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

  3. 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.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

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

Keep watching duisburg.de

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
67
Security headers
55
Email security
55
DNS health
70
Network security
100
GDPR outside view
33
Average
63

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

Duisburg.de operates as a large government entity website, targeting local residents, businesses, and tourists. Its business model is public service delivery and information dissemination, with no commercial sales. The site leverages partnerships with local event organizers, utilities, and environmental agencies to provide enriched content and services. The presence of multiple external partner domains reflects a collaborative ecosystem supporting city initiatives. The site’s content and structure indicate a focus on community engagement, administrative efficiency, and tourism promotion. Growth indicators include active event promotion and digital service offerings such as online appointment booking. The site’s market position is that of an authoritative municipal resource with high credibility and broad reach within its geographic area.

Security posture

The security maturity of duisburg.de is moderate to good. HTTPS is enforced, ensuring encrypted communications. The site uses asynchronous script loading and includes accessibility and translation plugins, which are well-maintained. However, the absence of explicit security headers such as Content-Security-Policy, X-Frame-Options, and others reduces defense-in-depth. No security or incident response contact information is visible, and no vulnerability disclosure policy or security.txt file is found. The site does not expose sensitive data in the HTML and does not appear to use vulnerable libraries. Privacy compliance is partial, with no visible cookie consent mechanism or detailed privacy policy. Recommendations include adding security headers, publishing privacy and cookie policies, and establishing clear incident response contacts to improve security posture and compliance.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with clear GDPR compliance statements.
  2. Implement a cookie consent mechanism to obtain user consent for tracking and cookies.
  3. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Provide explicit contact information for security incidents and consider publishing a vulnerability disclosure policy or security.txt file.
  5. Regularly audit and update third-party scripts and plugins to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadt Duisburg
Description
Duisburg verbindet - Ruhrgebiet, Niederrhein, Rheinland. Herzlich willkommen!
Key services
City administration information, Online appointment booking, News and events, Tourism information, Public services and infrastructure updates
Content quality
good
Branding
consistent

Technology

Stack
Information Enterprise Server – Sitepark GmbH, JavaScript, SVG icons, EyeAble accessibility plugin, Conword translation plugin
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML
  • Use of async and defer for scripts

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
piwik.js (Matomo)
Marketing tools
Matomo analytics
Transparency
basic

Site quality

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

Key observations

  1. Website is the official portal for the city of Duisburg, Germany
  2. Content is in German language targeting residents and visitors
  3. No explicit privacy or cookie policies found in the provided HTML
  4. Social media presence on major platforms with official accounts
  5. Use of HTTPS and modern web technologies
  6. No signs of blocking or WAF challenges
  7. No exposed sensitive data or obvious vulnerabilities detected
  8. Use of Matomo analytics for user tracking
  9. Good accessibility features including EyeAble plugin
  10. Multiple external links to partner and city-related domains
Technical notes

Notes

The website is built on a proprietary CMS platform (Information Enterprise Server by Sitepark GmbH) with a modern front-end using SVG icons, responsive design, and accessibility plugins like EyeAble. It uses asynchronous JavaScript loading and includes translation support via Conword. The site performance is moderate, with good mobile optimization and SEO meta tags present. The technical infrastructure appears stable and suitable for a large municipal website. Opportunities exist to enhance technical security by adding missing HTTP headers and improving privacy compliance mechanisms. The site integrates external partner content via iframes and links, which should be monitored for security and performance impacts.
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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