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Security report for telehouse-rechenzentrum.de

Telehouse - Rechenzentrum Frankfurt Colocation & Cloud · Telecommunications · Germany

Medium risk. 9 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

57/100

Risk levelMedium

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

Telehouse - Rechenzentrum Frankfurt Colocation & Cloud operates one of Germany's largest and most modern data centers, strategically located in Frankfurt, a key digital hub in Europe. The company offers comprehensive colocation, connectivity, and cloud services, leveraging 100% green energy and a carrier-neutral approach with access to over 400 carriers and cloud providers. As a subsidiary of KDDI Corporation, Telehouse benefits from a global infrastructure footprint and 25 years of industry experience. The website reflects a mature digital presence with interactive 3D visualizations and detailed service descriptions targeting business customers requiring reliable data center solutions. Technically, the website is built on WordPress with modern plugins such as Yoast SEO and WPBakery Page Builder, enhanced by Three.js for 3D content. It employs Google Analytics, Google Tag Manager, and Google Ads for analytics and marketing, alongside a GDPR-compliant cookie consent mechanism. Performance and mobile optimization are good, though accessibility features could be improved. Security posture is solid with HTTPS enabled and no exposed sensitive data, but lacks explicit security headers and published security policies. The security evaluation identifies strengths in encrypted communications and cookie consent but notes the absence of published privacy policies, terms of service, incident response, and vulnerability disclosure information. No critical vulnerabilities or suspicious content were detected. Overall, the website is professional, trustworthy, and well-positioned for its target market, though improvements in transparency and security documentation are recommended. Strategically, Telehouse should enhance its privacy and security documentation, implement security headers, and consider publishing a vulnerability disclosure policy to strengthen trust and compliance. These steps will support its market leadership and regulatory adherence in the evolving European data center landscape.

Scanned

NIS2 and GDPR posture

GDPR outside view
85/ 100 · Low
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

9 findings rated critical or high. Fix these first.

  1. 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

  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 telehouse-rechenzentrum.de

This scan found 28 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
72
Security headers
15
Email security
70
DNS health
0
Network security
100
GDPR outside view
85
Average
57

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 telehouse-rechenzentrum.de, from OffSeq Breach.

No leaked records found

Breach holds no records for telehouse-rechenzentrum.de right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

Telehouse holds a strong market position as a leading data center provider in Frankfurt, Germany, serving businesses needing colocation and cloud connectivity. Its carrier-neutral stance and extensive carrier ecosystem provide competitive advantages. The business model focuses on scalable infrastructure solutions, including dedicated cages, racks, and business continuity spaces. Revenue streams likely derive from colocation rentals, connectivity services, and managed support such as remote hands. The company targets enterprises and cloud service providers seeking reliable, green energy-powered data center facilities. Its affiliation with KDDI Corporation enhances global reach and operational stability. The website content and interactive features indicate a customer-centric approach emphasizing trust, flexibility, and technical excellence.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enforced and cookie consent mechanisms in place, reflecting GDPR awareness. However, the absence of explicit security headers (e.g., CSP, HSTS), published security policies, incident response contacts, and vulnerability disclosure mechanisms indicates gaps in transparency and readiness. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The lack of a security.txt file or abuse contact channels limits external reporting capabilities. Overall, while baseline security practices are met, enhancements in policy publication and header implementation would improve the security posture and compliance with standards such as ISO 27001 or NIST.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages accessible from the main navigation or footer.
  2. Implement and configure security headers including Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), X-Frame-Options, and X-Content-Type-Options.
  3. Create and publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Provide clear incident response contact information, including dedicated security or abuse email addresses.
  5. Enhance website accessibility features to improve compliance with WCAG standards and user experience.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Telehouse - Rechenzentrum Frankfurt Colocation & Cloud
Description
50.000 m² Rechenzentrum in Frankfurt - 100% Green Energy - Colocation - 400 Carrier & Cloud Provider - 25 Jahre Erfahrung
Key services
Colocation, Connectivity, Remote Hands, Business Continuity Space, Cloud Connect
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.3, Yoast SEO plugin, WPBakery Page Builder, jQuery 3.7.1, Three.js (WebGL for 3D visualization), Google Analytics, Google Tag Manager, Google Ads, WP Rocket, Borlabs Cookie, WP GDPR Compliance
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • Use of HTTPS
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager, SalesViewer
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Ads
Tracking pixels
SalesViewer
Marketing tools
Borlabs Cookie
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 rich content and interactive 3D visualization.
  2. Strong focus on colocation and connectivity services in Frankfurt, Germany.
  3. Use of modern web technologies and SEO best practices.
  4. Cookie consent implemented indicating GDPR awareness.
  5. No explicit privacy policy or terms of service pages found in provided content.
  6. Contact information is clearly presented with company email and phone.
  7. No explicit security or incident response policies published.
  8. No vulnerability disclosure or security.txt found.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website leverages a modern WordPress CMS with popular SEO and page builder plugins, ensuring ease of content management and SEO optimization. The integration of Three.js for 3D interactive visualization is a technical strength, enhancing user engagement. Analytics and marketing tools are standard and well-integrated. Performance is moderate, with caching and minification via WP Rocket. Mobile optimization is good, but accessibility could be improved. The hosting environment appears stable with German-based DNS infrastructure. Technical risks include potential lack of security headers and incomplete privacy documentation, which could impact compliance and trust. Overall, the technical implementation supports the business goals effectively with room for security and accessibility enhancements.
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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