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Security report for slam.nl

Mediahuis Radio · Media · Netherlands

Medium risk. 3 critical or high findings in Security headers and GDPR outside view.

Security score

72/100

Risk levelMedium

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

SLAM! is a well-established Dutch radio station specializing in pop and dance music, targeting listeners primarily in the Randstad region and digitally across the Netherlands. Operated by Mediahuis Radio, the station offers live streaming, curated playlists, DJ profiles, and music-related news and events, positioning itself as a key player in the Dutch media landscape. The website reflects a strong digital maturity with a modern tech stack based on SvelteKit, integration of Google Tag Manager, and Mediahuis proprietary analytics and advertising tools. The site is optimized for mobile and desktop with excellent design and user experience. Security posture is robust, featuring HTTPS, comprehensive security headers, and no visible vulnerabilities. Privacy compliance is well addressed with clear privacy and cookie policies and consent mechanisms. However, the site lacks a dedicated security policy and incident response contact information, which could enhance trust and preparedness. Overall, SLAM! demonstrates a high level of professionalism, technical sophistication, and market credibility, making it a reliable and engaging platform for its audience.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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. 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching slam.nl

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.

Daily monitoring

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
100
Security headers
30
Email security
70
DNS health
65
Network security
100
GDPR outside view
68
Average
72

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

SLAM! operates within the media sector under the Mediahuis Radio umbrella, leveraging a hybrid broadcasting and digital streaming business model. Its competitive advantage lies in its strong brand presence, multi-channel distribution (FM, web, app, DAB+), and curated content appealing to pop and dance music fans. Revenue streams likely include advertising and sponsorships, supported by integrated ad networks and marketing tools. The target customer segment is digitally savvy music listeners in the Netherlands, especially younger demographics in urban areas. The company maintains a partnership ecosystem with Mediahuis and related media brands such as Radio Veronica. Growth indicators include active content updates, social media engagement, and event promotions. Strategic observations suggest opportunities to enhance security transparency and incident response readiness to further solidify market trust.

Security posture

The website exhibits a mature security posture with enforced HTTPS, multiple security headers (CSP, HSTS, X-Frame-Options, etc.), and no exposed sensitive data or vulnerable libraries detected. Privacy policies and cookie consent mechanisms align with GDPR requirements, indicating compliance awareness. However, the absence of a public security policy and incident response contacts limits transparency and may hinder rapid response to security incidents. No vulnerability disclosure or security.txt files were found, which are recommended best practices for media companies handling user data. Overall, the security maturity is high but could be improved by formalizing and publishing security governance documents and contact channels.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Regularly review and update privacy and cookie policies to maintain GDPR compliance and transparency.
  5. Enhance user trust by showcasing certifications or trust seals related to security and privacy.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mediahuis Radio
Description
SLAM! is a Dutch radio station focusing on pop and dance music, available on FM in the Randstad region and digitally throughout the Netherlands via web, app, and DAB+. It offers live shows, playlists, DJ profiles, and music news.
Key services
Live radio streaming, Music playlists, DJ shows, Music news and events
Content quality
excellent
Branding
consistent

Technology

Stack
SvelteKit, JavaScript, Google Tag Manager, IMA SDK (Google Interactive Media Ads), Cxense (Mediahuis analytics), Ka-Ching (Mediahuis advertising)
Frameworks
SvelteKit
Platforms
Web, Mobile Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected
  • No visible insecure forms

Analytics and tracking

Services
Cxense, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Interactive Media Ads, Ka-Ching (Mediahuis)
Tracking pixels
Cxense
Marketing tools
Cxense
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 no blocking or WAF challenges.
  2. Strong branding and consistent professional design.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. No visible security policy or incident response contacts.
  5. Use of modern web technologies and frameworks.
  6. Active social media presence on Instagram, Facebook, and YouTube.
  7. Multiple external trusted domains for analytics and advertising.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on a modern and performant technology stack centered on SvelteKit, enabling fast loading and excellent mobile responsiveness. Integration with Google Tag Manager, IMA SDK for ads, and Mediahuis proprietary analytics and advertising scripts indicates a sophisticated digital infrastructure. The use of Umbraco CMS is inferred from media URLs, suggesting a hybrid content management approach. Hosting appears to leverage CDN services for media delivery, enhancing performance. Technical debt is minimal with no broken elements or errors detected. Opportunities exist to further improve accessibility features and formalize security-related technical documentation to reduce operational risks.
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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