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Security report for ato.cz

Asociace televizních organizací · Media · Czech Republic

High risk. 11 critical or high findings in GDPR outside view, Network security and 2 other checks.

Security score

40/100

Risk levelHigh

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

Asociace televizních organizací (ATO) is a Czech non-profit association established in 1997 that specializes in electronic measurement of television audience ratings in the Czech Republic. The organization provides key services including TV audience measurement using TV meters, data analysis, legal and regulatory agenda management, and promotional activities. The website reflects a well-established media industry player with a focus on transparency and data-driven insights for broadcasters and advertisers. Technically, the website employs modern web technologies such as HTML5, CSS3, JavaScript, Google Fonts, Font Awesome, Chart.js for data visualization, and Google Tag Manager for analytics. The site is mobile-optimized with good navigation and SEO practices, although some accessibility features are basic. Performance is moderate, and HTTPS is enforced ensuring secure communication. From a security perspective, the site uses HTTPS and implements a cookie consent mechanism, indicating awareness of privacy compliance. However, no advanced security headers were detected, and no explicit privacy policy or incident response information is provided, which are areas for improvement. The absence of WHOIS data for the domain raises some concerns about domain registration transparency, although the website content and business presence suggest legitimacy. Overall, the website is professional, content-rich, and safe for general audiences. Strategic recommendations include enhancing security headers, publishing a comprehensive privacy policy, and improving transparency around domain registration and incident response to strengthen trust and compliance.

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

11 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. 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

  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';…

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Keep watching ato.cz

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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
72
Security headers
15
Email security
70
DNS health
75
Network security
0
GDPR outside view
10
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

ATO operates as an important entity within the Czech media sector, focusing on TV audience measurement and related analytics. Its business model revolves around providing standardized and reliable TV viewership data to broadcasters, advertisers, and media agencies. The association's long-standing presence since 1997 and collaboration with Nielsen for data sourcing position it as a trusted market player. Revenue streams likely include membership fees, data licensing, and consulting services. The target customers are media companies, advertisers, and research organizations. The website indicates a stable partnership ecosystem but does not explicitly list partners or subsidiaries. Growth indicators include recent contracts for mobile TV measurement and ongoing data reporting projects. Strategic observations suggest a focus on digital transformation and expanding measurement capabilities beyond traditional TV viewing.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and a cookie consent mechanism in place, reflecting compliance with basic privacy regulations. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options reduces protection against common web attacks. No incident response or security contact information is published, which limits readiness for handling security incidents. The lack of WHOIS data transparency is a compliance and trust gap. No vulnerabilities or exposed sensitive data were detected in the content analysis. Overall, the security posture is adequate but could be significantly improved by adopting best practices in web security headers, publishing privacy and security policies, and enhancing transparency.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  2. Publish a detailed privacy policy page outlining GDPR compliance, data processing practices, and user rights.
  3. Provide clear incident response and security contact information to improve transparency and readiness.
  4. Regularly audit and update third-party scripts and libraries to avoid vulnerabilities.
  5. Investigate and resolve the missing WHOIS data issue to enhance domain registration transparency and trust.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Asociace televizních organizací
Description
Asociace televizních organizací (ATO) byla založena v roce 1997 jako zájmové sdružení právnických osob. Předmětem činnosti sdružení je ochrana a realizace společných zájmů členů sdružení spočívající zejména v zajišťování společného elektronického měření sledovanosti televize v České republice metodou TV metrů (projekt elektronického měření), v obchodním využívání výsledků, v propagační a reklamní činnosti, vydavatelské a nakladatelské činnosti, dále vypracovávání analýz a projednávání technicko-standardizačních a legislativně-právních a souvisejících opatření v oblasti provozování vysílání, které jsou ve společném zájmu členů a samoregulační činnost.
Key services
Electronic TV audience measurement, Data analysis and reporting, Legal and regulatory agenda, Promotional and publishing activities
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Google Fonts, Font Awesome, Chart.js, Google Tag Manager
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is in Czech with English alternate available.
  3. No explicit privacy or terms of service pages found.
  4. Cookie consent banner is implemented and functional.
  5. Contact information includes physical address and contact page but no direct emails or phone numbers visible.
  6. No security headers detected in provided data; HTTPS is used.
  7. WHOIS data is missing, which is a concern for domain legitimacy verification.
  8. Website uses modern web technologies and external libraries.
  9. No adult or questionable content detected; content is safe for general audiences.
Technical notes

Notes

The website uses a modern and standard technology stack with HTML5, CSS3, and JavaScript enhanced by libraries such as Chart.js for data visualization and Font Awesome for icons. Google Fonts integration ensures consistent typography. Google Tag Manager is used for analytics and marketing tags, indicating a mature approach to data collection and marketing. The site is mobile responsive and SEO optimized with proper meta tags and canonical links. Performance is moderate, with no major issues detected. However, the absence of detected CMS suggests a custom or lightweight platform. Hosting provider details are not available. Accessibility features are basic and could be improved to meet higher standards. Overall, the technical infrastructure supports the business needs but has room for modernization and enhanced security.
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. 40/100High37 findingsView report
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