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Security report for gyldendal.dk

Gyldendal · Publishing · Denmark

Low risk. 2 critical or high findings in Security headers.

Security score

78/100

Risk levelLow

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

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 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

2 findings 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 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 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 gyldendal.dk

This scan found 15 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
85
Security headers
35
Email security
72
DNS health
85
Network security
100
GDPR outside view
88
Average
78

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 gyldendal.dk, from OffSeq Breach.

Total records
1,100
Employees
7
Customers
1,021
Third parties
72
Weak passwords
10%

Latest record dated 2025-11-07 · 52 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 gyldendal.dk.

Select it in the checkout above.

Masked preview

  • –sts.gyldendal.dk2025-11-07
  • –sts.gyldendal.dk2025-07-26
  • –sts.gyldendal.dk2025-07-19
  • –test2-rap.gyldendal.dk2025-06-23
  • –sts.gyldendal.dk2025-04-15

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

Gyldendal operates in the media sector as a large-scale publisher with a strong market position in Denmark. Its business model revolves around publishing and retailing books across multiple genres, catering primarily to Danish readers. The company leverages partnerships with various third-party marketing and analytics providers to optimize user engagement and advertising effectiveness. The website's integration with multiple marketing platforms and analytics tools indicates a data-driven approach to customer insights and targeted advertising. While the company maintains a professional online presence, the lack of visible direct contact information and terms of service suggests areas for enhanced transparency and customer engagement. Gyldendal's ecosystem includes collaborations with marketing platforms like Agillic and Salesforce, enhancing its marketing capabilities.

Security posture

The website exhibits a mature security posture with enforced HTTPS and a comprehensive cookie consent mechanism that supports GDPR compliance. The use of multiple analytics and marketing tools is balanced with clear privacy policy disclosures. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options represents an opportunity for improvement. No signs of exposed sensitive data or vulnerabilities were found in the HTML content. The lack of a published security policy or incident response contact limits transparency in security governance. Overall, the site is secure but could benefit from enhanced security controls and clearer communication channels for security incidents.

Recommendations

  1. Implement and publish HTTP security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Create and make accessible a dedicated security policy and incident response page with clear contact information.
  3. Add a terms of service page to clarify user rights and obligations.
  4. Provide verified company contact emails and phone numbers prominently on the website for customer and security communications.
  5. Establish and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Gyldendal
Description
Gyldendal is a Danish publishing company offering a wide range of books including fiction, non-fiction, and books for children and youth, curated with a love for literature.
Key services
Book publishing, Book retail, Literary content curation
Content quality
good
Branding
consistent

Technology

Stack
Typekit Fonts, Google Analytics, Google Tag Manager, Facebook SDK, Leadfamly Popup, iPaper Display API, Curator.io embeds, Microsoft ASP.NET
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • Privacy policy linked
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Microsoft Clarity, New Relic
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google Marketing Platform, DoubleClick, Facebook, Microsoft Bing, Salesforce
Tracking pixels
Microsoft Clarity, Leadfamly, TwentyThree
Marketing tools
Agillic, Leadfamly, Salesforce
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Comprehensive cookie consent banner with detailed cookie categories and third-party services.
  3. No visible contact emails or phone numbers on the homepage or cookie banner.
  4. No terms of service or explicit security policy pages found.
  5. WHOIS data is unavailable, likely due to privacy protection.
  6. Use of multiple third-party analytics and marketing tools with clear privacy policy links.
  7. Good SEO and accessibility practices observed.
  8. No exposed sensitive data or security vulnerabilities detected in HTML content.
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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