Skip to main content

Security report for centrum.cz

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

Centrum.cz is a prominent Czech internet portal providing a variety of services including email, news, weather updates, horoscopes, and lottery information. It aggregates content from reputable Czech media sources such as Aktuálně.cz and Maxa.cz, positioning itself as a major player in the Czech online media landscape. The portal targets a general audience with a focus on delivering timely and relevant content in the Czech language. Technically, the website leverages modern web technologies including React and Next.js frameworks, supported by multiple third-party analytics and advertising platforms. The site demonstrates good mobile optimization and SEO practices, although accessibility features appear basic. Security posture is solid with HTTPS enforced and use of privacy and consent management SDKs, but lacks visible comprehensive privacy and cookie policies, which impacts privacy compliance scoring. The absence of WHOIS data limits domain registration trust assessment, but the website's branding and content quality suggest legitimacy. Overall, Centrum.cz is a well-established media portal with a mature digital presence but could improve transparency around privacy and security policies.

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

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

  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 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 centrum.cz

This scan found 24 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.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
65
Security headers
15
Email security
75
DNS health
80
Network security
100
GDPR outside view
25
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

Technical appendix

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

Business context

Business profile

Centrum.cz operates as a large-scale media portal in the Czech Republic, offering diversified content and services that include email hosting, news aggregation, weather forecasts, horoscopes, and lottery games. Its business model relies heavily on advertising revenue, supported by integration with multiple ad networks and tracking services. The portal collaborates with well-known Czech media outlets, enhancing its content credibility and market reach. The target customer segment is broad, encompassing general internet users in the Czech Republic seeking news and online services. The site’s partnership ecosystem includes advertising and analytics providers such as Gemius, CPEX, and Performax. Growth indicators include continuous content updates and integration of modern web technologies. Strategic observations suggest that while the portal is strong in content delivery and user engagement, enhancing privacy compliance and direct contact availability could strengthen user trust and regulatory adherence.

Security posture

The website exhibits a good security maturity level with HTTPS enforced and the use of multiple security and privacy-related SDKs. Security headers are implied but not explicitly confirmed in the provided data, suggesting room for improvement in header implementation such as Content-Security-Policy and X-Frame-Options. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The presence of third-party scripts necessitates ongoing vulnerability management to mitigate risks. Compliance gaps exist due to the lack of visible privacy and cookie policies, which are critical for GDPR adherence. Incident response readiness and security policy documentation are not evident, indicating potential areas for enhancement. Overall, the security posture is adequate for a media portal but would benefit from increased transparency and formalized security documentation.

Recommendations

  1. Publish comprehensive and easily accessible privacy and cookie policies to improve GDPR compliance and user trust.
  2. Implement and verify security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  3. Establish a clear vulnerability disclosure program and publish a security.txt file to facilitate responsible reporting and incident response.
  4. Regularly audit and update third-party scripts and libraries to minimize security risks from external dependencies.
  5. Enhance accessibility features to improve usability for all users and comply with accessibility standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Centrum.cz je český internetový portál nabízející e-mail, aktuální zpravodajství, počasí a další zajímavé služby.
Key services
email, news, weather, search, horoscope, lottery, real estate listings
Content quality
good
Branding
consistent

Technology

Stack
React (Next.js), Google Tag Manager, Google Analytics, Facebook SDK, Prebid.js, Gemius, CPEX, Performax, Snowly, Privacy Center SDK
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Use of privacy and consent SDKs
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Gemius
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Gemius, CPEX, Performax, Snowly
Tracking pixels
Gemius, Facebook SDK
Marketing tools
Privacy Center SDK
Transparency
basic

Site quality

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

Key observations

  1. Website is a major Czech internet portal offering news, email, weather, and entertainment.
  2. Content is in Czech language and well-structured.
  3. No WHOIS data available from CZ NIC registry, possibly due to privacy or registry restrictions.
  4. Multiple reputable third-party integrations for analytics and advertising.
  5. No visible contact emails or phone numbers on the main page HTML.
  6. No explicit privacy, cookie, or terms of service pages detected in the provided HTML snippet.
  7. No security.txt or vulnerability disclosure information found.
  8. No signs of WAF or content blocking.
  9. Website uses modern web technologies and frameworks (Next.js, React).
  10. Advertising and tracking scripts are present but standard for media portals.
Technical notes

Notes

Centrum.cz is built on a modern technology stack featuring React and Next.js, enabling server-side rendering and improved performance. The site integrates multiple third-party services for analytics, advertising, and privacy management, including Google Tag Manager, Google Analytics, Facebook SDK, Gemius, CPEX, and Performax. The hosting environment appears stable, though the exact provider is not identified. Performance is moderate with good mobile optimization and SEO practices in place. Accessibility is basic, suggesting potential for improvement. The site uses structured data (JSON-LD) for enhanced search engine understanding. Technical risks include reliance on numerous external scripts which require vigilant security monitoring. Overall, the infrastructure supports a robust user experience but could benefit from enhanced accessibility and security header implementation.
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. 60/100Medium24 findingsView report
Reviews of this site

Share your experience with centrum.cz. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review centrum.cz.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.