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Security report for annonce.cz

VLTAVA LABE MEDIA a.s. · Media · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

60/100

Risk levelMedium

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

Annonce.cz is a well-established Czech online classifieds platform operated by VLTAVA LABE MEDIA a.s., offering free classified ads across diverse categories including automotive, real estate, jobs, pets, and adult services. The website targets the Czech-speaking general public seeking a broad marketplace for buying, selling, and services. The platform demonstrates a mature business model with a strong market position in the Czech Republic's media sector. Technically, the site employs a modern technology stack including jQuery, Google Analytics, Hotjar, and a consent management platform (Didomi) to ensure GDPR compliance. The site is mobile-optimized and uses HTTPS for secure communications. Security posture is good with standard best practices observed, though some security headers could be improved. The absence of WHOIS data limits full domain trust verification but the website content and business presence indicate legitimacy. The site includes adult and dating content, targeting mature audiences, with appropriate consent mechanisms in place. Overall, Annonce.cz presents a professional and trustworthy online classifieds service with room for enhanced transparency in security and contact information.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

8 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 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

    • 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 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';…

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

Keep watching annonce.cz

This scan found 25 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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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
75
Security headers
25
Email security
70
DNS health
80
Network security
100
GDPR outside view
10
Average
60

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 annonce.cz, from OffSeq Breach.

Total records
2,086
Employees
0
Customers
2,086
Third parties
0
Weak passwords
32%

7 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 annonce.cz.

Select it in the checkout above.

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

The business operates in the media sector focusing on online classifieds, leveraging a free ad posting model to attract a wide user base. Its competitive advantage lies in its comprehensive category coverage and integration with print media. Revenue likely derives from advertising and premium listing services. The target customers are Czech individuals and businesses seeking to advertise goods and services. The company benefits from partnerships with major ad networks and analytics providers, enhancing monetization and user insights. Growth indicators include extensive category listings and integration of modern marketing tools. Strategic observations suggest focusing on improving transparency and expanding contact channels to enhance user trust.

Security posture

The website maintains a good security posture with HTTPS enforced and use of reCAPTCHA to mitigate automated abuse. Consent management aligns with GDPR requirements, indicating compliance maturity. However, the lack of explicit security headers such as Content-Security-Policy and X-Frame-Options is a gap that could expose the site to clickjacking or content injection risks. No critical vulnerabilities or exposed sensitive data were detected. Incident response and security policies are not publicly disclosed, which could be improved to demonstrate security culture and readiness. Overall, the security maturity is moderate to good but can be enhanced with additional controls and transparency.

Recommendations

  1. Implement and enforce comprehensive security headers including CSP, X-Frame-Options, and X-Content-Type-Options.
  2. Publish clear security and incident response policies accessible to users and partners.
  3. Enhance transparency by providing explicit company contact information including emails and phone numbers.
  4. Regularly audit and update third-party libraries and tracking scripts to mitigate vulnerabilities.
  5. Consider publishing WHOIS data or domain registration details to improve trust and legitimacy perception.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
VLTAVA LABE MEDIA a.s.
Description
Annonce - inzeráty zdarma na internetu i v tisku. Bezplatný bazar, inzerce práce, auto, moto, nemovitosti, seznamka, psi, kočky.
Key services
Free classified ads, Bazar (marketplace), Job listings, Real estate ads, Automotive ads, Dating and pet classifieds
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.5.1, Google Tag Manager, Google Analytics, Hotjar, Didomi Consent Management, Adobe DTM (Dynamic Tag Management), Google reCAPTCHA, Gemius Analytics, Czech Ad ID
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • Use of HTTPS
  • Consent management for GDPR compliance
  • Use of Google reCAPTCHA for bot protection

Analytics and tracking

Services
Google Analytics, Gemius, Hotjar
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google Adsense, AdActive
Tracking pixels
Hotjar, Gemius
Marketing tools
Adobe DTM
Transparency
good

Site quality

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

Key observations

  1. Website is a Czech classifieds portal with multiple categories including adult services and dating.
  2. Content is accessible without WAF or blocking.
  3. Strong use of third-party analytics and advertising networks.
  4. Consent management is implemented with Didomi CMP.
  5. No explicit contact emails or phone numbers found on homepage.
  6. WHOIS data is missing, limiting domain trust assessment.
  7. Website uses HTTPS and modern tracking technologies.
  8. Adult content is present but limited to services and dating, no explicit pornography.
Technical notes

Notes

The website uses a combination of legacy and modern web technologies, including jQuery 3.5.1 and advanced analytics/tracking tools such as Google Analytics, Hotjar, and Gemius. Consent management is handled by Didomi CMP, ensuring GDPR compliance. The site is responsive and optimized for mobile devices, with multiple CSS stylesheets targeting different screen sizes. Performance is moderate, with asynchronous loading of scripts to improve page load times. The presence of Adobe DTM indicates advanced tag management capabilities. However, no CMS was explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not disclosed. Technical risks include potential outdated libraries and missing security headers. Overall, the technical infrastructure supports a robust user experience but could benefit from modernization and enhanced security controls.
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

Earlier scans of this domain

  1. 60/100Medium33 findingsView report
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