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Security report for rtz.de

BioCampus Cologne & RTZ Köln · Technology · Germany

Medium risk. 5 critical or high findings in GDPR outside view and SSL/TLS.

Security score

63/100

Risk levelMedium

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

BioCampus Cologne & RTZ Köln operate as high-tech innovation hubs and incubators located in Cologne, Germany, providing infrastructure and community support for startups, scaleups, and corporates in DeepTech, HighTech, and STEM fields. The website reflects a medium-sized organization focused on fostering a vibrant ecosystem with over 70 knowledge-based companies. Their services include office spaces, laboratories, workshops, and event areas, supporting growth and networking. Technically, the website is built on Webflow CMS with modern web technologies such as jQuery and Google reCAPTCHA, hosted on a CDN with HTTPS enforced. Security posture is solid with encrypted connections and bot protection but lacks some advanced security headers and explicit incident response information. Privacy compliance is partially met with a comprehensive privacy policy but missing cookie consent mechanisms. Overall, the site is professional, well-branded, and trustworthy with active community engagement through events and job postings.

Scanned

NIS2 and GDPR posture

GDPR outside view
28/ 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

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

    • 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. 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
    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 17 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

Keep watching rtz.de

This scan found 25 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
59
Security headers
60
Email security
70
DNS health
60
Network security
100
GDPR outside view
28
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 rtz.de, from OffSeq Breach.

Total records
12
Employees
0
Customers
8
Third parties
4
Weak passwords
0%

1 subdomain 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 rtz.de.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company positions itself as a regional leader in technology incubation and real estate for innovative companies in Cologne. Its competitive advantage lies in combining physical infrastructure with a strong community and networking opportunities. The business model revolves around leasing office and lab spaces while fostering innovation ecosystems. Partnerships with local business chambers and innovation networks enhance its market presence. The jobhub and events sections indicate active engagement with startups and corporates, signaling growth and a dynamic ecosystem. Revenue likely derives from property leasing and event hosting. The target audience includes startups, scaleups, and established companies in technology and life sciences sectors.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS and Google reCAPTCHA protecting forms. However, it lacks explicit security headers such as Content-Security-Policy and X-Frame-Options, which could mitigate certain web attacks. No exposed sensitive data or vulnerable libraries were detected. The absence of a published incident response or vulnerability disclosure policy indicates room for improvement in security transparency and readiness. GDPR compliance is partially addressed with a privacy policy but lacks cookie consent mechanisms. Overall, the security posture is adequate for a corporate website but could be enhanced to meet higher standards.

Recommendations

  1. Implement a cookie consent banner to comply fully with GDPR requirements.
  2. Add security headers like Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection.
  3. Publish an incident response policy and provide clear security contact channels (e.g., security@ or abuse@ emails).
  4. Develop and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Enhance contact information visibility on the website to improve trust and user support.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
BioCampus Cologne & RTZ Köln
Description
Die Kölner Hightechhubs bieten das ideale Umfeld für Startups, Scaleups und Corporates, die sich in den Feldern DEEPTECH, HIGHTECH & MINT zu Hause fühlen. Mit dem BioCampus Cologne und dem Rechtsrheinischen Technologie- und Gründerzentrum Köln (RTZ) bildet sich eine Community von über 70 wissensbasierten Unternehmen, die sich über Neuzugänge freut und den Austausch mit externen Partnern lebt. Bedarfsgerechte Infrastruktur wie Büros, Werkstätten, Labore und Eventflächen schafft dabei den Rahmen für eine vitale Gemeinschaft, in der durch interne und externe Vernetzung ein lebendiges Umfeld entsteht.
Key services
Office spaces, Workshops, Laboratories, Event spaces, Networking and community building
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.6.0, Google reCAPTCHA, Webflow CMS, Google Fonts (Open Sans), Sygnal Webflow Forms
Frameworks
Webflow
Platforms
Webflow hosting
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA implemented on forms

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is primarily in German with English alternate language available.
  3. Focus on technology hubs and incubator services in Cologne region.
  4. No explicit contact emails or phone numbers found on main page; contact likely on subpages.
  5. No explicit cookie consent banner detected despite GDPR relevance.
  6. Use of modern web technologies and CMS (Webflow).
  7. Security practices include HTTPS and reCAPTCHA but lack some security headers.
  8. Events and job listings indicate active community engagement.
  9. No explicit privacy or security policy pages beyond Datenschutz (privacy).
  10. No vulnerability disclosure or incident response information found.
Technical notes

Notes

The website uses Webflow CMS, leveraging modern front-end technologies including jQuery and Google Fonts. It integrates Google reCAPTCHA for form security and Google Tag Manager for analytics and marketing. Hosting is via Webflow's CDN infrastructure with Cloudfront, ensuring good performance and availability. The site is mobile optimized with responsive design and uses semantic HTML with meta tags for SEO. Accessibility is basic but present. There is some technical debt in missing security headers and lack of cookie consent mechanisms. Overall, the technical implementation is solid but could benefit from enhanced security and privacy features.
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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