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Security report for szn.cz

Seznam.cz · Media · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view and DNS health.

Security score

63/100

Risk levelMedium

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

Seznam.cz is the leading Czech internet portal offering a wide range of services including search engine, email, news, weather, maps, video streaming, and podcasts. It serves a broad Czech audience with a comprehensive digital ecosystem. The website demonstrates a mature and professional digital presence with consistent branding and high-quality content. Technically, it employs modern web technologies, uses HTTPS with strong security headers, and leverages CDN hosting for performance. However, explicit privacy and cookie policies are not directly found in the main HTML content, which is a compliance gap. The WHOIS data is unavailable from the CZ.NIC registry query, which is unusual but may be due to registry policies. Overall, the site is secure, performant, and trustworthy, but could improve transparency on privacy and security 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

6 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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching szn.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.

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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
85
Security headers
65
Email security
60
DNS health
55
Network security
100
GDPR outside view
10
Average
63

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

Seznam.cz holds a dominant position in the Czech online media market, operating multiple content verticals and services that generate revenue primarily through advertising. Its ecosystem includes news portals, lifestyle content, sports, video streaming, and e-commerce related services. The portal integrates trusted partner domains and maintains a strong brand presence. The business model is advertising-driven with diversified content offerings targeting general Czech internet users. The site shows signs of extensive user engagement and a broad partnership network, indicating a stable and mature business operation.

Security posture

The website enforces HTTPS with excellent SSL configuration and implements key security headers such as HSTS, CSP, and X-Frame-Options. No sensitive data is exposed in the HTML content. The use of modern JavaScript frameworks and controlled third-party scripts suggests a good security hygiene. However, the absence of a published security policy, incident response contacts, or vulnerability disclosure mechanisms limits transparency. Privacy compliance indicators are minimal, with no explicit cookie consent mechanism detected in the main HTML. Overall, the security posture is strong technically but could benefit from enhanced policy disclosures and user privacy transparency.

Recommendations

  1. Publish clear and accessible privacy and cookie policies on the main site with links from the homepage.
  2. Add a dedicated security policy page and provide incident response contact information (e.g., security@ or abuse@ email).
  3. Implement a visible cookie consent mechanism to comply with GDPR and other privacy regulations.
  4. Consider publishing a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Provide contact details for a Data Protection Officer (DPO) or privacy contact to enhance trust and compliance.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Seznam.cz
Description
Nejnavštěvovanější český internetový portál nabízející vyhledávač, e-mail, aktuální zprávy, předpověď počasí a odkazy, které se mohou hodit.
Key services
Search engine, Email, News, Weather forecast, Maps, TV program, Classifieds, Dictionary, Video portal, Podcasts
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, CSS variables, SVG images, Responsive design, IntersectionObserver polyfill, PostHog analytics
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Secure forms with hidden fields for tracking

Analytics and tracking

Services
PostHog, Google Analytics (via GTM), Gemius
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
ssp.seznam.cz
Tracking pixels
gemius.pl, googletagmanager.com, posthog
Marketing tools
PostHog
Transparency
good

Site quality

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

Key observations

  1. Website is a major Czech internet portal with extensive content and services.
  2. No WHOIS data available from CZ.NIC registry query; domain info unavailable.
  3. No explicit privacy, cookie, or terms of service pages detected in main HTML content.
  4. Multiple trusted news and service partner domains linked.
  5. Uses modern web technologies and good security practices.
  6. No contact emails or phone numbers explicitly found in HTML content.
  7. No security.txt or vulnerability disclosure found.
  8. No adult or NSFW content detected.
  9. Analytics and advertising scripts present but standard for media portals.
Technical notes

Notes

The website uses a modern tech stack with CSS variables, SVG icons, and JavaScript modules optimized for different browser capabilities. It leverages CDN hosting (sdn.cz) for static assets, ensuring fast load times and global availability. The site is mobile-optimized with responsive design and accessibility features such as ARIA labels and keyboard navigation support. SEO is well addressed with meta tags, Open Graph, and Twitter cards. The site integrates multiple analytics and advertising scripts, including PostHog, Google Tag Manager, and Gemius, indicating a mature data collection infrastructure. Technical risks are low, but continuous monitoring of third-party scripts is recommended to mitigate supply chain risks.
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. 63/100Medium30 findingsView report
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