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Security report for marvinkuehner.com

Marvin Kühner · Media · N/a

High risk. 11 critical or high findings in Network security, Security headers and 3 other checks.

Security score

40/100

Risk levelHigh

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

Marvin Kühner's website serves as a professional portfolio for a film editor specializing in video post-production for high-profile clients such as Mercedes Benz, BMW, Adidas, and Zalando. The business operates as a small entity focused on providing film editing services, targeting film production companies and advertising agencies. The website is built on WordPress and employs common web technologies including jQuery and Plyr.js for video playback, with Google Analytics and Tag Manager for visitor tracking. While the site is visually professional and mobile-optimized, it lacks critical privacy and cookie policies, and does not implement GDPR compliance mechanisms. Security posture is moderate with HTTPS enabled and domain transfer protection, but missing DNSSEC and security headers reduce overall security maturity. Contact information is clearly presented, enhancing business credibility. Overall, the website is functional and professional but would benefit from improved privacy compliance and enhanced security practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 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

11 findings rated critical or high. Fix these first.

  1. 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

  2. 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"

    • 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';…

  3. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

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

Keep watching marvinkuehner.com

This scan found 28 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

€25per month

  • 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
15
Email security
70
DNS health
60
Network security
0
GDPR outside view
35
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 business positions itself as a niche film editing service provider with a portfolio showcasing collaborations with well-known brands, indicating a strong market presence in the media sector. The business model appears service-oriented, likely freelance or small agency based, with direct client engagement. The website's partnership with 'Some Studio' suggests collaboration with creative agencies. Revenue streams likely derive from project-based contracts. The absence of extensive business information or certifications suggests a small-scale operation focused on quality and reputation. Growth potential is tied to portfolio expansion and client referrals. The partnership ecosystem includes media production companies and creative studios.

Security posture

The website demonstrates a basic to moderate security posture. HTTPS is properly implemented, and domain registration includes clientTransferProhibited status to prevent unauthorized transfers. However, the absence of DNSSEC and security headers such as Content-Security-Policy and X-Frame-Options exposes the site to potential risks like DNS spoofing and clickjacking. No privacy or cookie policies are present, indicating compliance gaps with GDPR and other privacy regulations. No incident response or vulnerability disclosure information is provided, limiting transparency in security management. The use of outdated jQuery version 2.0.2 could pose security risks if vulnerabilities exist in that version. Overall, the site is functional but requires enhancements to meet modern security and privacy standards.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Add comprehensive privacy and cookie policies with a consent mechanism to comply with GDPR.
  4. Update JavaScript libraries such as jQuery to the latest secure versions.
  5. Consider publishing a vulnerability disclosure policy or security.txt file to improve transparency and incident response readiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Marvin Kühner
Description
Film editor showcasing portfolio work including commercials and trailers for brands such as Mercedes Benz, BMW, Adidas, Zalando, and RAM.
Key services
Film editing, Video post-production
Content quality
good
Branding
consistent

Technology

Stack
jQuery 2.0.2, Plyr.js 3.3.12, Google Analytics, Google Tag Manager
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
65/100
Good practices seen
  • HTTPS enabled
  • Domain status clientTransferProhibited

Analytics and tracking

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

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a professional portfolio for a film editor named Marvin Kühner.
  2. No privacy, cookie, or terms of service policies found on the site.
  3. Contact information is clearly provided in the footer with email and phone number.
  4. Site uses WordPress CMS with some outdated jQuery version (2.0.2).
  5. Google Analytics and Tag Manager are used for tracking without visible cookie consent mechanism.
  6. No security headers detected in the HTML content.
  7. No forms detected on the homepage; no data collection forms present.
  8. No social media links explicitly found in the HTML content.
  9. Site content is safe and suitable for general audiences.
  10. Domain WHOIS data is consistent and domain is actively maintained.
Technical notes

Notes

The website is built on WordPress CMS with a custom theme and uses jQuery 2.0.2 and Plyr.js for video playback. Google Analytics and Google Tag Manager are integrated for visitor tracking. The site loads moderate-sized video content and images, which may impact performance but is optimized with lazy loading placeholders. Mobile optimization is good, with responsive design elements. SEO is basic with meta viewport and canonical tags but lacks advanced structured data or Open Graph metadata. Accessibility features are minimal but present. Hosting appears stable with domain registration through RegistryGate GmbH and DNS servers at kasserver.com. No advanced frameworks detected. Technical debt includes outdated jQuery and missing security headers.
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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