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Security report for markt.ch

markt.de GmbH & Co. KG · E-commerce · Germany

Medium risk. 4 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

71/100

Risk levelMedium

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

Markt.de GmbH & Co. KG operates a well-established online classifieds platform targeting private and commercial users in Germany. Founded in 2005 and part of the Markt Gruppe, the company offers a broad range of classified ad categories including vehicles, real estate, jobs, services, pets, and electronics. The platform supports free and paid ads, serving millions of listings with a focus on ease of use and comprehensive search capabilities. The website is professionally designed with consistent branding and good content quality, targeting a general audience without adult content exposure on the main domain.

Scanned

NIS2 and GDPR posture

GDPR outside view
43/ 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

4 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

    • 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

  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 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. 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 markt.ch

This scan found 21 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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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
72
Security headers
65
Email security
70
DNS health
75
Network security
100
GDPR outside view
43
Average
71

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 markt.ch, from OffSeq Breach.

Total records
15
Employees
0
Customers
15
Third parties
0
Weak passwords
0%

2 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 markt.ch.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Markt.de holds a strong market position as a major classifieds portal in Germany, leveraging a business model based on free listings supplemented by premium services. Its target customers include individuals and businesses seeking to buy or sell goods and services locally. The company benefits from a mature digital ecosystem with integrated advertising partners and tracking technologies, enabling monetization through ads and premium features. The presence of a Swiss partner domain (markt.ch) indicates regional expansion or partnership. The platform's extensive category taxonomy and content relevance support user engagement and growth potential.

Security posture

The website enforces HTTPS and employs modern security practices such as Google reCAPTCHA v2 and cookie consent mechanisms, indicating a good security baseline. However, explicit security headers are not detected in the HTML content, and no published security policy or incident response contacts are found, which are areas for improvement. No vulnerabilities or exposed sensitive data were identified in the analysis. The extensive use of third-party advertising and tracking scripts is managed with user consent, aligning with GDPR requirements. Overall, the security posture is solid but could be enhanced with formal policies and additional HTTP security headers.

Recommendations

  1. Implement and publish a formal security policy and incident response contact information on the website.
  2. Add HTTP security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to strengthen protection against common web attacks.
  3. Establish and publicize a vulnerability disclosure program and security.txt file to encourage responsible reporting of security issues.
  4. Regularly audit and update third-party libraries and scripts to mitigate risks from vulnerable dependencies.
  5. Enhance transparency around data retention policies and user privacy controls to further improve GDPR compliance and user trust.

Contact details published on the site

Addresses
Legal name
markt.de GmbH & Co. KG
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
markt.de GmbH & Co. KG
Description
Markt.de ist ein Anzeigennetzwerk für Kleinanzeigen. Die Markt.de GmbH & Co. KG mit Hauptsitz in München und Niederlassung in Essen ist eine Tochtergesellschaft der Markt Gruppe.
Key services
Free and paid classified ads, Search and browse millions of private and commercial listings, Categories including vehicles, real estate, jobs, services, pets, electronics
Content quality
good
Branding
consistent

Technology

Stack
RequireJS, Kotlin/JS, jQuery, FancyBox, BxSlider, Google Tag Manager, Google reCAPTCHA v2, Lodash, SortableJS, FingerprintJS, EasyQRCodeJS, CKEditor
Frameworks
Kotlin/JS, RequireJS
Platforms
Progressive Web App (PWA)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA v2
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics 360, Google Tag Manager, Facebook Connect
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Adnami, Traffective, Google Ads, Google Adsense, Criteo, Solads, Microsoft Ads, RTBHouse, Spotify Ads
Tracking pixels
Facebook Connect, Google Analytics 360, Youtube, Vimeo, Emarsys Webextend
Marketing tools
Facebook Connect
Transparency
good

Site quality

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

Key observations

  1. Website is a mature, well-established classifieds platform in Germany.
  2. Comprehensive category structure and search functionality.
  3. Strong presence of advertising and tracking technologies with user consent.
  4. Good mobile and accessibility support.
  5. No signs of blocking or WAF interference.
  6. No explicit security policy or incident response contacts published.
  7. No vulnerability disclosure or security.txt found.
  8. Company contact information and legal data are clearly presented.
  9. Content is safe for general audiences with segregated adult content.
Technical notes

Notes

Markt.de utilizes a modern and modular technology stack including RequireJS for module loading, Kotlin/JS for frontend logic, and popular JavaScript libraries such as jQuery, FancyBox, and BxSlider. The platform is implemented as a Progressive Web App (PWA), providing good mobile optimization and accessibility. The site loads multiple external scripts for advertising, tracking, and analytics, integrated with a consent management platform. Performance is moderate with room for optimization. The CMS appears custom-built with dynamic content loading and marketlet components. Overall, the technical infrastructure supports a scalable and user-friendly classifieds marketplace but could benefit from performance tuning and enhanced security configurations.
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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