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Security report for stroeer-x.de

Ströer X GmbH · Media · Germany

High risk. 8 critical or high findings in GDPR outside view, Network security and 1 other check.

Security score

49/100

Risk levelHigh

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

Ströer X GmbH is a large German-based outsourcing partner specializing in dialog marketing, sales, and customer experience services. As part of the Ströer Group, it leverages the strength of a major corporation combined with the agility of a mid-sized service provider. The company offers a broad portfolio including customer service, digital transformation, social media management, and value-added services such as chat software and AI automation. Their market position is strong within media and related sectors, serving clients across multiple industries including e-commerce, energy, financial services, telecommunications, and tourism. Technically, the website is built on TYPO3 CMS and integrates modern marketing and analytics tools like Google Tag Manager, TikTok Pixel, and HubSpot forms, with GDPR-compliant cookie consent managed by Cookiebot. However, the site currently lacks a valid SSL certificate and modern TLS support, which is a critical security concern. Security policies such as SPF and DMARC are properly configured, but DNSSEC and other advanced DNS security measures are absent. Overall, the company demonstrates good digital maturity but needs to address fundamental security gaps to protect user data and maintain trust.

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

8 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

  2. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  3. 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"

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

Keep watching stroeer-x.de

This scan found 22 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

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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
50
Security headers
40
Email security
85
DNS health
85
Network security
25
GDPR outside view
18
Average
51
After the cap
49

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 · found on this site
  • 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

Ströer X GmbH operates in the BPO sector with a focus on dialog marketing and customer experience, targeting businesses seeking outsourced sales and customer service solutions. Their competitive advantage lies in their affiliation with the Ströer Group, extensive European presence, and a comprehensive service offering that spans multiple communication channels and industries. The company emphasizes professionalism, efficiency, and synergy across its portfolio brands. Revenue streams likely include service contracts for sales campaigns, customer support outsourcing, and digital transformation projects. The partnership ecosystem includes major marketing and analytics providers such as HubSpot, Cookiebot, and social media platforms. Growth indicators include a large employee base (~7000), multiple sales and contact center locations, and handling over 100 million customer contacts annually. Strategic observations suggest a focus on expanding digital services and leveraging data-driven marketing while maintaining compliance with GDPR and industry standards.

Security posture

The current security posture of the website is moderate with significant room for improvement. While email security is supported by valid SPF and DMARC records with a quarantine policy, the absence of DNSSEC and CAA records reduces DNS security robustness. The SSL/TLS configuration is critically deficient, lacking a valid certificate and support for modern protocols (TLS 1.2/1.3), which exposes users to potential interception and trust issues. No HSTS policy is enforced, and OCSP stapling is disabled, further weakening HTTPS security. The site uses Cookiebot for GDPR-compliant cookie consent management, indicating awareness of privacy regulations. However, no explicit security policy or incident response information is publicly available, which may impact transparency and readiness. Overall, the company should prioritize securing its web infrastructure to protect data confidentiality and integrity, and enhance trustworthiness.

Recommendations

  1. Obtain and deploy a valid SSL/TLS certificate supporting TLS 1.2 and TLS 1.3 to secure all web traffic.
  2. Enable HTTP Strict Transport Security (HSTS) with includeSubDomains and preload directives to enforce HTTPS.
  3. Implement DNSSEC and CAA DNS records to strengthen DNS security and certificate issuance control.
  4. Publish a clear security policy and incident response contact information to improve transparency and preparedness.
  5. Regularly audit and update third-party integrations and cookie consent mechanisms to maintain GDPR compliance and minimize tracking risks.

Contact details published on the site

Addresses
Legal name
Ströer X GmbH
Technical notes

Notes

The website is hosted on servers managed by your-server.de with multiple authoritative nameservers. It uses TYPO3 CMS, a robust open-source content management system, and integrates marketing and analytics technologies including Google Tag Manager, TikTok Pixel, and HubSpot forms. Cookie consent is managed via Cookiebot, ensuring compliance with GDPR. Performance metrics indicate moderate load times (~3.9 seconds) and a page size of approximately 456 KB, which is acceptable but could be optimized. Mobile optimization is good with responsive images and video content. Accessibility is basic, with some ARIA roles and keyboard navigation support. SEO is supported by meta tags, Open Graph, and structured data in JSON-LD format describing the organization. However, the lack of a valid SSL certificate and outdated TLS support represent significant technical risks that could affect user trust and search engine ranking. Modernizing the security infrastructure and optimizing performance would enhance the overall technical maturity.
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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