Stadt Köln · Government · Germany
Medium risk. 5 critical or high findings in GDPR outside view and Security headers.
The website www.stadt-koeln.de is the official digital presence of the city administration of Cologne, Germany. It serves as a comprehensive portal for residents and visitors to access municipal services, news, event information, and contact details. The site is well-structured, multilingual, and provides key functionalities such as online appointment booking and access to various public service departments. The target audience primarily includes local citizens, businesses, and visitors seeking official information and services. Technically, the website employs a mature technology stack including jQuery, Bootstrap, and Modernizr, with analytics powered by Matomo and eTracker. The site is hosted on German infrastructure with anycast DNS servers, ensuring reliable access. Mobile optimization and accessibility features are well implemented, contributing to a positive user experience. From a security perspective, the site enforces HTTPS and includes standard security headers, reflecting good security hygiene. However, there is no visible cookie consent mechanism, and no explicit security or incident response policies are published, which are areas for improvement to enhance compliance and transparency. The use of an outdated jQuery version may pose potential risks if not regularly patched. Overall, the website is trustworthy, professional, and serves its governmental function effectively. Strategic recommendations include implementing a cookie consent banner, publishing security policies, updating JavaScript libraries, and adding a vulnerability disclosure channel to strengthen security posture and regulatory compliance.
Scanned
NIS2 Art. 21(2)
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.
5 findings rated critical or high. Fix these first.
These are the privacy signals visitors and data protection authorities look for under GDPR.
EU businesses are subject to strict GDPR requirements
What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures
GDPR requires clear information about cookie usage
What to do: Add a dedicated cookie policy explaining cookie usage and purposes
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.
Forces HTTPS connections
What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"
Prevents clickjacking attacks
What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"
Controls resources the browser is allowed to load
What to do: Implement a Content-Security-Policy appropriate for your application
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Each check with its score, findings and the evidence it collected.
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
Not counted
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.
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
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Leaked records that mention stadt-koeln.de, from OffSeq Breach.
50 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 stadt-koeln.de.
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Breach keeps ingesting new leaks, so these numbers can grow between scans.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
Automated reading of the public site. Ratings are indicative.
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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