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Security report for cetin.cz

Cetin · Telecommunications · Czech Republic

Low risk. 1 critical or high finding in GDPR outside view.

Security score

85/100

Risk levelLow

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

Cetin operates the largest telecommunications network in the Czech Republic, providing critical infrastructure and services to over 99.6% of the population. The company offers a broad range of services including voice, internet, data, and infrastructure solutions targeting operators, municipalities, developers, and households. As a member of the PPF Group, Cetin holds a strong market position with a focus on reliability and cybersecurity. The website reflects a mature digital presence built on the Liferay platform, integrating modern web technologies and multiple analytics tools. Security posture is robust with HTTPS and security headers properly implemented, though explicit security policies and incident response information are not publicly detailed. Privacy compliance is well addressed with comprehensive privacy and cookie policies. The absence of WHOIS data is a notable anomaly but does not detract significantly from the overall legitimacy given the corporate branding and content quality. Strategic recommendations include enhancing transparency on security policies and providing direct security contact channels to improve trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
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

1 finding 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.

    • 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

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

Keep watching cetin.cz

This scan found 13 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
100
Security headers
75
Email security
93
DNS health
70
Network security
100
GDPR outside view
73
Average
85

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 cetin.cz, from OffSeq Breach.

Total records
440
Employees
71
Customers
205
Third parties
164
Weak passwords
20%

Latest record dated 2026-05-28 · 19 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 cetin.cz.

Select it in the checkout above.

Masked preview

  • –adfs.cetin.cz2026-05-28
  • –wgis.cetin.cz2026-05-27
  • –mwfm.cetin.cz2026-05-26
  • –mwfm.cetin.cz2026-05-25
  • –ca.cetin.cz2026-05-21

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

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

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

Business context

Business profile

Cetin's market positioning as the backbone of Czech telecommunications is reinforced by its extensive network coverage and service portfolio. The company benefits from its affiliation with PPF Group, leveraging corporate governance and investor relations to maintain credibility. Its business model focuses on infrastructure provision and wholesale services to operators and municipalities, with a growing emphasis on digital transformation and sustainability. The website's content and navigation cater to diverse audiences including business clients and end consumers, supporting lead generation and service awareness. The use of multiple tracking and marketing tools indicates a data-driven approach to customer engagement. Growth indicators include active career pages and sustainability initiatives. The partnership ecosystem is primarily internal within PPF Group, with no suspicious external affiliations detected.

Security posture

The website demonstrates a solid security foundation with enforced HTTPS, comprehensive security headers, and no visible exposure of sensitive data. The use of modern JavaScript libraries and frameworks is balanced with attention to security best practices. However, the lack of publicly available security policies, incident response procedures, and vulnerability disclosure mechanisms suggests room for improvement in transparency and readiness. No critical vulnerabilities or malware indicators were detected. Privacy compliance is evident, but direct security contact channels are absent, which could hinder incident reporting and response. Overall, the security maturity is good but could be enhanced by formalizing and publishing security governance documents.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide direct security contact emails (e.g., security@cetin.cz) and abuse reporting channels.
  4. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  5. Enhance visibility of data protection officer contact information to comply with GDPR best practices.

Contact details published on the site

Addresses
Legal name
Cetin
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Cetin
Description
We operate the largest telecommunications network in the Czech Republic, covering 99.6% of the population with both fixed and mobile technologies. Our network ensures critical information infrastructure, and thanks to top experts and modern technologies, we set the highest standards in cybersecurity. We provide international services to over 200 operators worldwide.
Key services
Voice services, Internet and media, Data services (DWDM, Ethernet, Internet), Infrastructure services, Optical connection, Bonding, Wi-Fi router settings
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.6.4, Google Analytics, Facebook SDK, LinkedIn Insight, Curator.io embeds, Liferay Portal, React, Clay UI
Frameworks
Liferay
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data detected
  • Secure forms with analytics event tracking

Analytics and tracking

Services
Google Analytics, Facebook Analytics, LinkedIn Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel, LinkedIn Insight
Marketing tools
Curator.io
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured
  2. Content is comprehensive and relevant to telecommunications sector
  3. No WHOIS data available, which is unusual for a large corporate domain
  4. Security headers and HTTPS are properly configured
  5. Privacy and cookie policies are present and GDPR compliant
  6. No direct emails or phone numbers found on the homepage; contact via forms
  7. Multiple third-party analytics and tracking scripts are used
  8. No signs of adult or questionable content
  9. No visible vulnerability disclosure or security.txt file
Technical notes

Notes

The website is built on the Liferay CMS platform, utilizing a modern tech stack including React and Clay UI components. It integrates multiple third-party analytics and marketing tools such as Google Analytics, Facebook SDK, and LinkedIn Insight. The site is mobile-optimized with good accessibility and SEO practices. Performance is moderate, with combined and minified resources served via Liferay's combo servlet. The technical infrastructure supports a professional and scalable web presence suitable for a large enterprise. Opportunities exist to optimize loading times further and reduce reliance on multiple external scripts to minimize attack surface and improve privacy.
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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