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Security report for koelncongress.de

Koelncongress GmbH · Hospitality · Germany

Medium risk. 6 critical or high findings in GDPR outside view and Security headers.

Security score

58/100

Risk levelMedium

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

Koelncongress GmbH is a well-established event management company based in Cologne, Germany, with a strong market position as the largest provider of exceptional event locations in the city. They offer full-service event planning and hosting for a wide range of events including conferences, corporate events, cultural and social gatherings. Their website reflects a mature digital presence built on WordPress, featuring detailed event calendars, news, and multiple location pages. Technically, the site uses modern TLS protocols and has implemented strong email authentication mechanisms such as SPF and DMARC, but lacks advanced SSL features like HSTS and OCSP stapling. The company demonstrates good privacy compliance with GDPR-aligned policies and cookie consent mechanisms. However, there are opportunities to enhance DNS security and SSL configurations. Overall, the security posture is moderate with room for improvement in certificate transparency and DNSSEC adoption.

Scanned

NIS2 and GDPR posture

GDPR outside view
18/ 100 · Critical
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

  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"

    • 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';…

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

Keep watching koelncongress.de

This scan found 21 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
87
Security headers
15
Email security
50
DNS health
85
Network security
90
GDPR outside view
18
Average
58

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

Koelncongress operates in the hospitality sector focusing on event venue management and full-service event solutions. Their competitive advantage lies in their extensive portfolio of premium locations in Cologne and their integration within the Koelnmesse Group. The business model centers on providing tailored event services to corporate and cultural clients, supported by a strong partnership ecosystem including industry memberships. The company targets event organizers requiring professional venues and comprehensive event management. Growth indicators include a high volume of annual events (~1,700) and active marketing through news and event calendars. The partnership with Koelnmesse and memberships in global event associations enhance credibility and market reach.

Security posture

The current security maturity of Koelncongress is moderate. They have implemented key email security standards (SPF, DMARC) and use modern TLS protocols (TLS 1.3 and 1.2) without known vulnerabilities. The website includes a cookie consent mechanism and GDPR-compliant privacy policies. However, the absence of DNSSEC, CAA records, HSTS, and OCSP stapling indicates gaps in DNS and SSL security hardening. No explicit incident response or vulnerability disclosure policies were found, which could impact readiness for security incidents. The use of captcha on contact forms and anonymized Google Analytics tracking shows awareness of privacy and bot mitigation. Overall, the security culture appears adequate but could benefit from formalized policies and enhanced technical controls.

Recommendations

  1. Enable HTTP Strict Transport Security (HSTS) with includeSubDomains and preload to enforce HTTPS and prevent downgrade attacks.
  2. Implement OCSP stapling to improve SSL certificate revocation checking and reduce latency.
  3. Deploy DNSSEC to protect DNS queries from spoofing and cache poisoning attacks.
  4. Add CAA DNS records to restrict which certificate authorities can issue certificates for the domain.
  5. Develop and publish a vulnerability disclosure policy and incident response contact information to improve security transparency and readiness.

Contact details published on the site

Addresses
Legal name
Koelncongress GmbH
Technical notes

Notes

The website is built on WordPress CMS with a custom theme and uses common JavaScript libraries such as jQuery and jQuery UI. Hosting is provided by Cloudpit, indicated by the nameservers. Performance is moderate with a page load time of approximately 4 seconds and a page size of 283 KB. Mobile optimization and SEO are good, with responsive navigation and structured content. The tech stack includes Google Analytics for tracking with IP anonymization enabled. Email infrastructure is robust with SPF and DMARC policies configured. However, the SSL configuration lacks advanced features like HSTS and OCSP stapling, and DNS security features like DNSSEC and CAA are missing. These technical gaps represent modernization opportunities to reduce risk and improve user trust.
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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