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Security report for telekom-dienste.de

Deutsche Telekom AG · Telecommunications · Germany

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

63/100

Risk levelMedium

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

Deutsche Telekom AG operates the website www.telekom.de, providing a comprehensive range of telecommunications services including mobile telephony, fixed-line, internet, TV, and fiber optic solutions. The website targets both private and business customers in Germany, positioning itself as a leading telecommunications provider with a strong market presence. The business model revolves around offering bundled and individual telecom services with a focus on digital innovation and customer convenience. Technically, the website employs modern web technologies such as React, Dynatrace for monitoring, and Tealium for tag management, ensuring a responsive, accessible, and SEO-optimized user experience. The infrastructure appears robust, with fast performance and mobile optimization, hosted likely on proprietary or Telekom-controlled infrastructure. From a security perspective, the site enforces HTTPS, uses security monitoring tools, and implements GDPR-compliant consent mechanisms. However, explicit security policies and vulnerability disclosure information are not publicly available, representing an area for improvement. No critical vulnerabilities or suspicious activities were detected. Overall, the website demonstrates a high level of professionalism, trustworthiness, and compliance with privacy regulations, making it a reliable digital presence for Deutsche Telekom AG. Strategic recommendations include publishing detailed security policies, enhancing visible security headers, and providing a vulnerability disclosure channel to further strengthen security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
45/ 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

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

    • 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';…

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Keep watching telekom-dienste.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.

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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
57
Security headers
20
Email security
88
DNS health
70
Network security
100
GDPR outside view
45
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 telekom-dienste.de, from OffSeq Breach.

Total records
40,512
Employees
0
Customers
40,463
Third parties
49
Weak passwords
9%

112 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 telekom-dienste.de.

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

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Technical appendix

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

Business context

Business profile

Deutsche Telekom AG is a major player in the German telecommunications market, offering a wide portfolio of services including mobile, fixed-line, internet, and TV. The company leverages its extensive network infrastructure and brand recognition to maintain a leading market position. Revenue streams include subscription fees, device sales, and value-added services. The website reflects a customer-centric approach with dedicated sections for private and business customers, online shops, and customer service portals. Partnerships with services like MagentaCloud and MagentaSport indicate a broad ecosystem. Growth indicators include promotion of new technologies like 5G and fiber optics, and targeted offers for younger demographics. The company operates with a high degree of digital maturity and integration.

Security posture

The website exhibits a mature security posture with enforced HTTPS, use of monitoring and analytics tools like Dynatrace and Tealium, and GDPR-compliant cookie consent mechanisms. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the absence of publicly available security policies, incident response contacts, and vulnerability disclosure mechanisms suggests room for improvement in transparency and proactive security communication. The site does not show signs of phishing or malware. Overall, the security posture is strong but could benefit from enhanced documentation and communication of security practices.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and standards.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Ensure all recommended security headers (CSP, X-Frame-Options, X-Content-Type-Options) are present and properly configured.
  4. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  5. Enhance incident response readiness by providing clear contact channels for security incidents.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Deutsche Telekom AG
Description
Aktuelle Telekom Angebote für Mobilfunk (5G/LTE), Festnetz und Internet, TV & mehr. Alles aus einer Hand: für zuhause & unterwegs.
Key services
Mobilfunk (Mobile telephony), Festnetz (Fixed-line telephony), Internet, TV, Glasfaser (Fiber optic network)
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Dynatrace (ruxitagentjs), Tealium (tag management), Swiper (carousel), CSS3, HTML5
Frameworks
React
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security monitoring scripts (Dynatrace)
  • Consent management for GDPR compliance
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Dynatrace, Tealium
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Tealium, Dynatrace
Marketing tools
Tealium Tag Management, Dynatrace Monitoring
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible and professionally designed
  2. Strong focus on telecommunications products and services
  3. Comprehensive privacy and cookie consent mechanisms implemented
  4. Use of modern web technologies and analytics tools
  5. No signs of phishing, malware, or suspicious content
  6. Clear navigation and multiple customer service contact points
Technical notes

Notes

The website is built using modern front-end technologies including React and employs advanced monitoring and tag management tools such as Dynatrace and Tealium. The site is well-optimized for performance and mobile devices, with responsive design and accessibility considerations. The use of carousels and dynamic content is handled via established libraries like Swiper. Hosting appears to be managed internally or by trusted providers, ensuring reliability. The technical implementation supports a high-quality user experience with good SEO and accessibility standards. Opportunities exist to improve technical security headers and to document technical policies more explicitly.
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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