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Security report for carsale24.com

carsale24 · Transportation · Germany

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

51/100

Risk levelMedium

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

carsale24 operates as a professional online platform facilitating the sale of used cars primarily in Germany, Austria, and Switzerland. The company connects private sellers with a network of verified dealers, offering a streamlined, secure, and convenient car selling experience. Their business model is commission-based, funded by dealers, and includes value-added services such as premium vehicle appraisals and personalized customer support. The website demonstrates strong market positioning with trust signals including customer testimonials, media endorsements, and certification badges. Technically, the website is built on WordPress with a modern tech stack including the Enfold theme, WP Rocket for performance optimization, and Usercentrics for consent management. The site is well-optimized for SEO and mobile responsiveness, ensuring a high-quality user experience. Analytics and marketing tools such as Google Tag Manager are employed with privacy compliance in mind. From a security perspective, the site enforces HTTPS and integrates consent management, but lacks explicit HTTP security headers and incident response contact details. No vulnerabilities or exposed sensitive data were detected. The absence of WHOIS data for the domain is a concern but does not currently undermine the site's legitimacy given the professional content and business presence. Overall, carsale24 presents a trustworthy and mature online service with strong business credibility and technical implementation. Strategic improvements in security headers and transparency around incident response would further enhance their security posture and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

6 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 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';…

  2. GDPR outside view

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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching carsale24.com

This scan found 26 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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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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
60
DNS health
75
Network security
20
GDPR outside view
73
Average
51

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

carsale24 targets private car sellers and dealers in the German-speaking automotive market, leveraging a dealer-funded commission model. Their competitive advantage lies in providing a hassle-free, secure, and anonymous selling process with professional negotiation support and vehicle pickup services. The platform's integration with premium appraisal services and a verified dealer network strengthens its market position. The company benefits from media recognition and customer trust, indicating a healthy growth trajectory and strong brand presence. Their ecosystem includes partnerships with appraisal providers and marketing platforms, supporting a comprehensive service offering.

Security posture

The website demonstrates a solid security foundation with HTTPS enforcement and consent management integration, aligning with GDPR requirements. However, the lack of explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options represents an area for improvement. No incident response or security contact information is publicly available, which could hinder timely vulnerability reporting and mitigation. The use of third-party scripts necessitates ongoing security audits to prevent supply chain risks. Overall, the security posture is good but could be enhanced by adopting additional best practices and transparency measures.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  2. Publish clear incident response and vulnerability disclosure policies with dedicated security contact channels.
  3. Regularly audit and update third-party scripts and plugins to minimize exposure to vulnerabilities.
  4. Enhance transparency by providing detailed privacy and data protection officer contact information.
  5. Maintain continuous monitoring and penetration testing to proactively identify and remediate security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
carsale24
Description
Autoverkauf mit carsale24 ► schnell & einfach, meistbietend an geprüfte Händler, inkl. persönlicher Beratung und Abholung am Wunschort.
Key services
Online car selling, Dealer auction platform, Premium appraisal services, Personalized support, Vehicle pickup and deregistration
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress 6.8.3, Enfold Theme, jQuery 3.7.1, WP Rocket, Google Tag Manager, Usercentrics CMP, TrustBox widget
Frameworks
Schema.org structured data, Rank Math SEO
Platforms
WordPress
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management via Usercentrics
  • No exposed sensitive data in HTML
  • Secure forms with required fields and privacy checkbox

Analytics and tracking

Services
Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Marketing tools
Usercentrics CMP, Rank Math SEO
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 rich content and interactive forms
  2. Strong focus on German-speaking markets (DE, AT, CH)
  3. Multiple customer testimonials and trust badges enhance credibility
  4. Use of modern web technologies and SEO best practices
  5. No signs of malicious or adult content
  6. WHOIS data missing, which is a potential red flag but not definitive
Technical notes

Notes

The website leverages a mature WordPress CMS with a well-maintained theme and performance optimization via WP Rocket. The use of modern JavaScript libraries and asynchronous script loading contributes to fast page loads and good user experience. SEO is robust with structured data (JSON-LD) and meta tags properly implemented. Mobile optimization is excellent, ensuring accessibility across devices. However, the hosting provider is not explicitly identified, and there is no visible CDN usage. The technical stack is modern and well-integrated, though opportunities exist to enhance security headers and incident response capabilities.
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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