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Security report for bonn.de

Bundesstadt Bonn · Government · Germany

Medium risk. 5 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

63/100

Risk levelMedium

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

The website www.bonn.de serves as the official digital portal for the Bundesstadt Bonn, providing extensive information and services related to the city administration. It targets residents, visitors, and businesses, offering multilingual content and access to municipal services such as event calendars, service portals, and contact forms. The site is well-branded with consistent city imagery and logos, reflecting its authoritative position as a government entity. Technically, the site employs a modern CMS platform (Information Enterprise Server by Sitepark GmbH) and uses standard web technologies including JavaScript, CSS, and SVG icons. The site is mobile-optimized, accessible, and SEO-friendly, with a moderate performance profile. Security best practices are observed with HTTPS enforcement, security headers, and cookie consent mechanisms. From a security perspective, the site demonstrates a solid posture with no visible vulnerabilities or exposed sensitive data. However, explicit security policies, incident response contacts, and vulnerability disclosure mechanisms are not published, which could be improved to enhance transparency and trust. Privacy compliance is strong, with a comprehensive privacy policy and cookie consent aligned with GDPR requirements. Overall, www.bonn.de is a professional, trustworthy, and well-maintained government website. It effectively balances user experience, privacy, and security, serving as a reliable resource for its audience. Strategic recommendations include publishing detailed security and incident response policies, adding vulnerability disclosure information, and providing data protection officer contact details to further strengthen compliance and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
55/ 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

5 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

  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
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  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 bonn.de

This scan found 27 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
72
Security headers
30
Email security
55
DNS health
65
Network security
100
GDPR outside view
55
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

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 bonn.de, from OffSeq Breach.

Total records
264
Employees
0
Customers
251
Third parties
13
Weak passwords
29%

20 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 bonn.de.

Select it in the checkout above.

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

Bundesstadt Bonn operates as a municipal government entity providing digital access to city services and information. Its market position is that of an official city portal, serving a broad audience including citizens, tourists, and local businesses. The business model focuses on public service delivery rather than commercial revenue generation. Key services include appointment reservations, event calendars, social engagement platforms, and online service portals. The site links to partner domains such as local transport and civic engagement platforms, indicating a collaborative ecosystem. Growth indicators include multilingual support and integration of modern digital tools like chatbots. The portal's strategic focus is on accessibility, transparency, and citizen engagement.

Security posture

The security maturity of the website is moderate to strong. HTTPS is enforced with good SSL configuration and security headers such as HSTS, CSP, and X-Frame-Options are present. The site implements cookie consent mechanisms aligned with GDPR. No exposed credentials or sensitive data were detected in the HTML content. However, the absence of published security policies, incident response contacts, and vulnerability disclosure reduces transparency and preparedness perception. There is no evidence of outdated or vulnerable libraries. Overall, the site follows good security practices but could improve by formalizing and publishing security governance documents and incident response procedures.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and standards.
  2. Provide clear incident response contact channels, including security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file.
  4. Include contact information for the Data Protection Officer to enhance GDPR transparency.
  5. Regularly review and audit third-party scripts and dependencies to mitigate supply chain risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bundesstadt Bonn
Description
Die Bundesstadt Bonn bietet umfangreiche Informationen zur Stadt und Zugang zu allen Services der Stadtverwaltung in elf Sprachen.
Key services
Stadtinformationen, Terminreservierungen, Dienstleistungen der Stadtverwaltung, Veranstaltungskalender, Online-Serviceportal
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, CSS, SVG icons, Information Enterprise Server – Sitepark GmbH
Frameworks
Sitepark CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of security headers

Analytics and tracking

Services
neurabot chat analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
neurabot chat widget
Marketing tools
neurabot chat widget
Transparency
basic

Site quality

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

Key observations

  1. Website is an official city government portal for Bonn, Germany.
  2. Content is comprehensive, multilingual, and service-oriented.
  3. Strong privacy and cookie consent mechanisms are in place.
  4. No explicit security or incident response policies published.
  5. No visible vulnerabilities or suspicious external links.
  6. Use of modern web technologies and CMS platform.
  7. Good accessibility and SEO practices observed.
  8. No adult or questionable content detected.
  9. WHOIS data is minimal but consistent with domain usage.
Technical notes

Notes

The website is built on the Information Enterprise Server CMS by Sitepark GmbH, utilizing modern web standards including HTML5, CSS3, and JavaScript. SVG icons are extensively used for UI elements, enhancing scalability and performance. The site is responsive and optimized for mobile devices, with accessibility features such as skip links and ARIA attributes. Performance is moderate, with asynchronous loading of scripts and lazy loading of images. SEO is supported by canonical links, meta descriptions, Open Graph tags, and Twitter cards. The technical infrastructure appears robust, though hosting provider details are not explicit. Opportunities exist to enhance performance metrics and provide more detailed technical documentation.
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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