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Security report for tdc.com

TDC Erhverv · Telecommunications · Denmark

Medium risk. 3 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

66/100

Risk levelMedium

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

TDC Erhverv is a leading Danish telecommunications provider specializing in integrated communication and IT solutions for businesses of all sizes. Their offerings include mobile subscriptions, internet services, IT security, and collaboration tools, targeting small and medium-sized enterprises as well as larger organizations and public institutions. The website reflects a strong market position with a professional and modern design, clear navigation, and comprehensive content tailored to their business audience. Technically, the site is built using modern frameworks such as React and Gatsby, with integrations to major analytics and marketing platforms like Adobe Experience Cloud and Google Analytics. Security posture is robust with HTTPS enforcement and a detailed cookie consent mechanism ensuring GDPR compliance. However, explicit security policies and incident response contacts are not prominently available, representing an area for improvement. Overall, the site demonstrates high professionalism, trustworthiness, and compliance with privacy regulations.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 100 · Medium
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

3 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

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  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 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 tdc.com

This scan found 12 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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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
0
Security headers
65
Email security
85
DNS health
85
Network security
100
GDPR outside view
58
Average
66

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

Technical appendix

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

Business context

Business profile

TDC Erhverv operates under the parent company Nuuday and serves a broad spectrum of business customers in Denmark. Their competitive advantage lies in their comprehensive portfolio of telecommunications and IT services, including advanced security solutions and cloud-based collaboration platforms. The business model focuses on providing reliable, scalable, and secure communication infrastructure to enterprises, supported by strong customer service and digital engagement through multiple channels. The company leverages partnerships and integrations with global technology providers such as Salesforce, Microsoft, and Adobe to enhance their service offerings. Growth indicators include a focus on emerging technologies like 5G and hybrid work solutions. The website's content and structure support their market presence and customer engagement strategies effectively.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of secure cookie management platforms, and adherence to GDPR through detailed consent mechanisms. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. The integration of third-party services is managed with privacy policies and consent controls. However, the absence of a dedicated security policy page and incident response contact information limits transparency in security governance. The site would benefit from publishing a vulnerability disclosure policy or security.txt file to enhance trust and readiness. Overall, the security practices align well with industry standards for a telecommunications provider, but there is room for enhanced communication of security policies.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publicize a vulnerability disclosure program or security.txt file.
  4. Regularly review and update third-party scripts and integrations to mitigate potential vulnerabilities.
  5. Enhance accessibility features to improve compliance and user experience for all users.

Contact details published on the site

Addresses
Legal name
TDC Erhverv
Registration number
CVR 40075291
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
TDC Erhverv
Description
TDC Erhverv provides telecommunications and IT solutions for small, medium, and large businesses, including mobile subscriptions, internet, IT security, and collaboration tools.
Key services
Mobile subscriptions, Internet solutions, IT security, Collaboration platforms, Cloud services
Content quality
excellent
Branding
consistent

Technology

Stack
React, Gatsby, Adobe Experience Cloud, Google Analytics, CookieInformation Consent Management
Frameworks
React, Gatsby
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • No exposed sensitive data in HTML
  • Use of secure cookie management platform

Analytics and tracking

Services
Google Analytics, Adobe Analytics, Salesforce Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google DoubleClick, Adform, Albacross
Tracking pixels
Adobe Experience Cloud, Facebook Pixel, LinkedIn Insight Tag, GetFeedback
Marketing tools
Adobe Experience Cloud, Google Marketing Platform, Salesforce
Transparency
good

Site quality

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

Key observations

  1. Comprehensive cookie consent mechanism with detailed cookie categories and descriptions
  2. Multiple external integrations with major platforms (Google, Adobe, Salesforce, Microsoft)
  3. Strong focus on GDPR compliance and user privacy
  4. Clear segmentation of business customer types (SMB, enterprise)
  5. Professional and modern website design with responsive layout
  6. No signs of WAF or content blocking
  7. No explicit security policy or incident response contact found on main site
  8. Use of multiple social media channels for customer engagement
Technical notes

Notes

The website is built on a modern technology stack including React and Gatsby, enabling fast performance and excellent mobile optimization. It integrates with major analytics and marketing platforms such as Adobe Experience Cloud, Google Analytics, Salesforce, and Microsoft services, indicating a high level of digital maturity. The site uses a comprehensive cookie consent management system ensuring compliance with privacy regulations. The technical implementation includes proper meta tags, SEO optimization, and accessibility considerations. No significant technical debt or performance issues were observed. Hosting details are not explicitly disclosed, but the site appears well-structured and professionally maintained, supporting reliable business operations.
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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