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Security report for avizo.cz

AVÍZO, a.s. · Real Estate · Czech Republic

High risk. 9 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

33/100

Risk levelHigh

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

AVÍZO.cz operates as a Czech online classifieds platform providing free advertisement listings across a broad spectrum of categories including vehicles, real estate, jobs, electronics, and more. The platform targets general consumers in the Czech Republic seeking to buy or sell goods and services with ease, offering features such as video and photo uploads without mandatory registration. The business model centers on free ad postings with potential paid promotional options, positioning AVÍZO.cz as a well-established regional player in the classifieds market. Technically, the website employs modern web technologies including jQuery, Bootstrap, and Swiper.js, alongside Google Tag Manager and Cloudflare Turnstile for bot mitigation. The site is mobile-optimized, accessible, and SEO-friendly, with a moderate performance profile. Security measures include HTTPS enforcement, standard security headers, and cookie consent mechanisms, reflecting a mature digital infrastructure. From a security perspective, AVÍZO.cz demonstrates good practices with no evident vulnerabilities or exposed sensitive data. However, the absence of a dedicated security policy or incident response contact information suggests room for improvement in transparency and preparedness. Privacy compliance is robust, with clear privacy and cookie policies aligned with GDPR requirements. Overall, the website is professional, trustworthy, and safe for general audiences. The main risk factor is the lack of WHOIS data, which limits domain registration trust verification. Strategic recommendations include enhancing security transparency, publishing incident response details, and verifying domain registration status to bolster credibility and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

9 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. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  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"

    • 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 avizo.cz

This scan found 23 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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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
0
Security headers
15
Email security
60
DNS health
80
Network security
20
GDPR outside view
25
Average
33

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

AVÍZO.cz holds a solid position in the Czech online classifieds sector, leveraging a broad category offering to attract diverse user segments. Its competitive advantage lies in free ad postings with multimedia support and comprehensive guides for safe trading, fostering user trust and engagement. Revenue likely derives from premium ad placements or featured listings. The company maintains active partnerships with regional service providers and promotes community engagement via social media channels. Growth indicators include a well-structured website with frequent content updates and a sizable user base. Strategic observations suggest focusing on expanding digital marketing and enhancing security transparency to strengthen market presence.

Security posture

The website exhibits a mature security posture with enforced HTTPS, modern security headers, and bot protection via Cloudflare Turnstile. Privacy compliance is evident through cookie consent and GDPR-aligned policies. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of a public security policy and incident response contacts indicates a gap in security governance transparency. The site would benefit from formalizing vulnerability disclosure and incident response procedures to improve resilience and user trust. Overall, the security culture appears adequate but could be enhanced with clearer communication and documented policies.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and user guidance.
  2. Provide clear incident response contact information to facilitate reporting and response.
  3. Implement and publicize a vulnerability disclosure program to encourage responsible reporting.
  4. Verify and update WHOIS domain registration information to improve trustworthiness.
  5. Enhance transparency around data protection officer contact and compliance measures.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
AVÍZO, a.s.
Description
AVÍZO.cz is an online classifieds platform offering free private advertisements including video and photos without registration. It covers a wide range of categories such as vehicles, real estate, jobs, electronics, furniture, and more.
Key services
Free online classified ads, Video and photo ad support, Category-based listings, Guides for safe trading
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.6.4, Bootstrap 5, Swiper.js, Google Tag Manager, Cloudflare Turnstile Captcha, Cookie Script Consent SDK
Frameworks
Bootstrap
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Cloudflare Turnstile captcha for bot protection
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics, Seznam.cz tracking
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Seznam.cz tracking
Marketing tools
Cookie Script
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and no blocking.
  2. WHOIS data is unavailable, which reduces trust score.
  3. Site uses modern web technologies and good security practices.
  4. Privacy and cookie policies are present and GDPR compliant.
  5. Contact information is clearly provided with phone and email.
  6. Social media presence on Facebook, YouTube, LinkedIn.
  7. Content is safe for general audiences with clear category separation.
  8. No explicit security policy or incident response info found.
  9. Advertising and analytics use industry standard tools.
Technical notes

Notes

The website is built on a modern technology stack featuring jQuery, Bootstrap, and Swiper.js, ensuring responsive design and interactive UI elements. Google Tag Manager and analytics scripts are properly integrated for marketing and performance tracking. The site loads with moderate speed and includes accessibility features such as ARIA labels and keyboard navigation support. Technical debt appears minimal, with opportunities to improve by adopting a CMS for easier content management and enhancing hosting provider transparency. Overall, the infrastructure supports stable operations with room for optimization in performance and security documentation.
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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