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Security report for 3.dk

3 Danmark A/S · Telecommunications · Denmark

Low risk. 1 critical or high finding in Security headers.

Security score

82/100

Risk levelLow

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

3 Danmark A/S is a major telecommunications provider in Denmark, offering mobile telephony, broadband internet, and streaming services. The website reflects a professional and modern digital presence, leveraging React and Emotion CSS for frontend development. The site is well-structured, mobile-optimized, and includes essential security headers and HTTPS encryption, indicating a solid security posture. However, the absence of explicit privacy and cookie policies, as well as contact information, suggests areas for compliance and transparency improvement. Overall, the domain and website align with a reputable business entity, though WHOIS data is not publicly available, likely due to privacy protection.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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

1 finding 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 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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  • 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
90
Security headers
60
Email security
75
DNS health
65
Network security
100
GDPR outside view
100
Average
82

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

3 Danmark operates in the telecommunications sector, targeting both consumer and business markets in Denmark. The company is part of the larger CK Hutchison Holdings group, which strengthens its market position. The business model focuses on providing integrated telecom services including mobile plans, broadband, and streaming content. The website's design and content quality support a strong brand image, though the lack of detailed business contact information and policies may limit trust for some users. The company leverages common marketing and analytics tools, indicating a mature digital marketing strategy.

Security posture

The website demonstrates good security practices with HTTPS enforcement and multiple security headers such as Content-Security-Policy and Strict-Transport-Security. No obvious vulnerabilities or exposed sensitive data were detected in the analyzed content. However, the lack of a published security policy, incident response contacts, or vulnerability disclosure mechanisms suggests room for improvement in transparency and incident readiness. GDPR compliance indicators are minimal on the site, which could be a compliance risk given the European jurisdiction.

Recommendations

  1. Publish a comprehensive privacy policy and cookie consent banner to improve GDPR compliance.
  2. Add clear contact information including security incident response contacts and data protection officer details.
  3. Implement a security.txt file or vulnerability disclosure policy to encourage responsible reporting.
  4. Enhance accessibility features to meet WCAG standards and improve user experience for all visitors.
  5. Regularly review and update third-party scripts and tracking tools to minimize security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
3 Danmark A/S
Description
3 Danmark is a telecommunications company offering mobile telephony, broadband, and streaming services primarily in Denmark.
Key services
Mobile telephony, Broadband internet, Streaming services
Content quality
good
Branding
consistent

Technology

Stack
React, Emotion CSS, Material UI
Frameworks
React
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Security headers present

Analytics and tracking

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

Advertising

Ad networks
Google DoubleClick
Transparency
basic

Site quality

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

Key observations

  1. Website content is fully accessible and professional.
  2. No WHOIS data available from the provided raw output.
  3. No explicit privacy, cookie, or terms of service pages detected in the provided HTML snippet.
  4. No contact emails or phone numbers explicitly found in the provided content.
  5. Uses modern frontend technologies (React, Emotion CSS).
  6. Security headers are properly configured.
  7. No WAF or blocking mechanisms detected.
  8. External links mostly to social media and common analytics/tracking domains.
Technical notes

Notes

The website uses a modern React-based frontend with Emotion CSS for styling and Material UI components, indicating a contemporary tech stack. Performance is moderate with responsive design for mobile devices. SEO is supported by proper meta tags and structured content, though no JSON-LD or Open Graph metadata was explicitly found in the truncated HTML. Hosting details are not disclosed. The site lacks a CMS indication, suggesting a custom or proprietary platform. Technical debt appears low, but improvements in accessibility and privacy compliance are recommended.
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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