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Security report for antenne-sylt.de

Antenne Sylt GmbH & Co. KG · Media · Germany

High risk. 10 critical or high findings in GDPR outside view, Network security and 2 other checks.

Security score

40/100

Risk levelHigh

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

Antenne Sylt GmbH & Co. KG operates a regional radio station focused on rock and pop music, serving the Sylt island community and surrounding areas in Germany. The website offers live streaming, podcasts, local news, event information, and advertising services, positioning itself as a key media outlet in its market niche. The company maintains a professional digital presence with clear branding and consistent content quality. Technically, the site is built on TYPO3 CMS, employs modern JavaScript libraries, and integrates a recognized cookie consent management platform (Usercentrics), indicating a mature digital infrastructure. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though security headers and explicit incident response policies are absent. Privacy compliance is well addressed with accessible privacy and cookie policies. Overall, the website is trustworthy, user-friendly, and professionally maintained, supporting the company's business objectives effectively.

Scanned

NIS2 and GDPR posture

GDPR outside view
28/ 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

10 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

  2. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  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 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"

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

Keep watching antenne-sylt.de

This scan found 32 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
62
Security headers
25
Email security
60
DNS health
65
Network security
0
GDPR outside view
28
Average
40

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 · found on this site
  • 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

The company targets local radio listeners interested in rock and pop music and local news, leveraging multiple digital channels including streaming and podcasts. Its business model relies on broadcasting and advertising revenue, supported by partnerships with related media networks such as Radio 21 and Rockland. The website's comprehensive content and event promotion indicate active community engagement and a strong market position within the regional media sector. The presence of social media links and a cookie consent mechanism reflects awareness of modern marketing and compliance requirements. No direct revenue streams like e-commerce were detected, consistent with a media broadcasting business.

Security posture

The website demonstrates a good security baseline with HTTPS enabled and no exposed sensitive data or vulnerable libraries detected. The use of Usercentrics for cookie consent shows commitment to privacy compliance. However, the absence of security headers (e.g., CSP, HSTS) and lack of a published security policy or incident response contact reduce the overall security maturity. No security.txt file or vulnerability disclosure mechanism was found, which could be improved to enhance transparency and trust. No signs of malware or phishing were detected. The security score is solid but could be improved with additional best practices.

Recommendations

  1. Implement comprehensive HTTP security headers including Content Security Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, and X-Content-Type-Options.
  2. Publish a clear security policy and provide dedicated incident response contact channels (e.g., security@ or abuse@ email).
  3. Add a security.txt file to facilitate responsible vulnerability disclosure.
  4. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
  5. Enhance transparency by detailing data retention policies and cookie usage in privacy documentation.

Contact details published on the site

Addresses
Legal name
Antenne Sylt GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Antenne Sylt GmbH & Co. KG
Description
Höre Antenne Sylt und genieße die beste Musik sowie aktuelle lokale Nachrichten und Informationen. Wir sind dein Begleiter für den Tag auf Sylt
Key services
Radio broadcasting, Local news and information, Podcasts and interviews, Event promotion, Advertising services
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, JavaScript, Usercentrics CMP, Google Tag Manager, KonsoleStream Web Player
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Usercentrics CMP
Marketing tools
Usercentrics Consent Management Platform
Transparency
basic

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. Uses TYPO3 CMS with modern web technologies and cookie consent management.
  3. Clear business and contact information provided.
  4. Strong focus on local radio broadcasting and music content.
  5. Multiple streaming options and podcasts available.
  6. Social media presence on Facebook, YouTube, Instagram.
  7. No security.txt or explicit security policy found.
  8. No exposed sensitive data or obvious vulnerabilities detected.
Technical notes

Notes

The website is powered by TYPO3 CMS, a robust open-source content management system, ensuring scalability and maintainability. It uses modern JavaScript libraries and integrates Google Tag Manager and Usercentrics CMP for analytics and privacy management. The site is mobile optimized with responsive design and good accessibility features. Performance is moderate, with compressed CSS and JS assets loaded asynchronously. The presence of multiple streaming options and embedded media players indicates a complex media delivery infrastructure. No hosting provider details were found. SEO is well addressed with meta tags, Open Graph tags, and canonical URLs. Overall, the technical implementation supports a professional and user-friendly experience with room for performance optimization.
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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