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Security report for telekom.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

61/100

Risk levelMedium

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

Deutsche Telekom AG operates a comprehensive telecommunications website offering mobile, fixed-line, internet, and TV services primarily targeting private and business customers in Germany. The site demonstrates a strong market position as a leading telecom provider with a broad portfolio of services and modern digital infrastructure. The technical infrastructure is mature, leveraging React, advanced monitoring, and tag management systems to ensure performance and user experience. Security posture is robust with HTTPS, security headers, and consent management, although explicit security policies and incident response information are not publicly detailed. Overall, the website is professional, trustworthy, and compliant with GDPR, reflecting the enterprise-grade standards expected from a major telecom operator.

Scanned

This is an earlier scan of telekom.de. View the latest report

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';…

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

Keep watching telekom.de

This scan found 24 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
78
DNS health
65
Network security
100
GDPR outside view
45
Average
61

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.de, from OffSeq Breach.

Total records
603,434
Employees
428
Customers
26,843
Third parties
576,163
Weak passwords
31%

Latest record dated 2026-06-15 · 500 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.de.

Select it in the checkout above.

Masked preview

  • –www.telekom.de2026-06-15
  • –teltec.telekom.de2026-06-15
  • –fed.telekom.de2026-06-13
  • –teltec.telekom.de2026-06-12
  • –www.telekom.de2026-06-08

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

Open in Breach(opens in a new tab)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

The website reflects Deutsche Telekom's dominant market position in Germany's telecommunications sector, offering a wide range of services including 5G mobile, fiber optic internet, and TV streaming. The business model focuses on bundled telecommunications services for both private and business customers, supported by digital customer portals and apps. The company leverages partnerships and subsidiaries to extend service offerings, with a strong emphasis on customer experience and digital engagement. The presence of promotional campaigns and targeted offers indicates active market competition and customer acquisition strategies.

Security posture

The site employs strong security measures including HTTPS, CSP, and secure login mechanisms. Privacy and cookie consent are well implemented, supporting GDPR compliance. However, the absence of a publicly accessible security policy, incident response contacts, or vulnerability disclosure program suggests areas for improvement in transparency and security communication. No vulnerabilities or exposed sensitive data were detected in the analyzed content. The security score is high but could be enhanced by publishing formal security documentation and contact channels.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information, including security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure program or security.txt file.
  4. Enhance visibility of the Data Protection Officer contact details to improve GDPR transparency.
  5. Regularly audit and update third-party scripts to mitigate potential security risks.
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. Erleben was verbindet!
Key services
Mobilfunk (Mobile telephony), Festnetz (Fixed-line telephony), Internet, TV, MeinMagenta App, Glasfaser (Fiber optic internet)
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, CSS3, HTML5, React (react-root div), Dynatrace monitoring, Tealium tag management, Swiper carousel, Various custom JS plugins
Frameworks
React
Platforms
Web desktop and mobile optimized
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of CSP
  • No exposed sensitive data in HTML
  • Secure login mechanisms
  • Consent management for cookies

Analytics and tracking

Services
Dynatrace, Tealium
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Tealium, Dynatrace
Marketing tools
Tealium Tag Manager, Dynatrace Real User 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 with rich content and interactive features.
  2. Strong branding and consistent corporate identity.
  3. Comprehensive product and service offerings clearly presented.
  4. Robust privacy and cookie consent mechanisms implemented.
  5. Use of modern web technologies and performance optimizations.
  6. No signs of phishing or malicious content on the site.
  7. No explicit security policy or incident response page found publicly.
  8. No vulnerability disclosure or security.txt detected.
  9. Contact information is present but no explicit security contact emails found.
Technical notes

Notes

The website uses a modern tech stack with React for UI rendering, advanced JavaScript plugins, and comprehensive monitoring via Dynatrace and Tealium. The site is optimized for performance and mobile responsiveness, with good SEO and accessibility practices. Hosting appears to be managed internally or through trusted providers. The technical implementation supports a fast, reliable user experience with scalable infrastructure. Opportunities exist to improve CMS transparency and further document technical security controls.
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

Earlier scans of this domain

  1. 61/100 −10Medium32 findingsView report
  2. 71/100Medium23 findingsView report
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