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Security report for serialzone.cz

SerialZone.cz · Media · Czech Republic

High risk. 10 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

43/100

Risk levelHigh

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

SerialZone.cz is a Czech entertainment website specializing in TV series information, news, and community engagement. Established in 2007, it serves as a comprehensive portal offering series calendars, watchlists, subtitles databases, articles, and forums targeting a general audience interested in television content. The site maintains a consistent brand presence and offers a variety of user-centric features supported by advertising revenue.

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

10 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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  3. 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

  4. 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 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 serialzone.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.

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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
50
Email security
40
DNS health
75
Network security
0
GDPR outside view
10
Average
43

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

The website holds a stable market position within the Czech media sector as a niche entertainment portal. Its business model relies primarily on advertising and user engagement through forums and interactive content such as quizzes and playlists. The presence of multiple ad networks and tracking services indicates monetization through programmatic advertising. The site targets Czech-speaking TV series enthusiasts and maintains active social media channels to extend its reach. The lack of direct company contact details suggests a small or medium-sized operation focused on content delivery rather than direct sales.

Security posture

The site enforces HTTPS and uses modern consent management platforms, indicating awareness of privacy regulations such as GDPR. However, it lacks explicit security headers like Content-Security-Policy and X-Frame-Options, which could enhance protection against common web attacks. No security policy or incident response contacts are published, which is a gap in transparency and readiness. The use of multiple third-party scripts and ad networks introduces potential risk vectors, though no immediate vulnerabilities were detected in the content. Overall, the security posture is moderate but could be improved with better header implementation and published security policies.

Recommendations

  1. Implement comprehensive security headers including CSP, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  2. Publish a dedicated security policy page and provide incident response contact information to improve transparency and trust.
  3. Introduce a security.txt file to facilitate responsible vulnerability disclosure.
  4. Regularly audit and update third-party libraries and ad scripts to minimize exposure to vulnerabilities.
  5. Enhance accessibility features to comply with standards and improve user experience for all visitors.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SerialZone.cz
Description
Seriály z celého světa na jednom místě. Spousty informací a novinek o všech myslitelných seriálech. Kalendář vysílaných seriálů, osobní watchlist. A navíc databáze českých titulků k seriálům.
Key services
TV series information, News articles, Watchlist, Calendar of series broadcasts, Database of Czech subtitles, Forum, Quizzes, Music playlists
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.5.1, Google Analytics, Google Tag Manager, Gemius Audience, Didomi Consent Management, Caroda Video Player, CPEX Consent Management Platform, Mookie1 Containr, Teads Advertising, Adsbygoogle, Prebid.js (impression-media), Amung.us visitor counter
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of consent management platform

Analytics and tracking

Services
Google Analytics, Gemius Audience
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Adsense, Caroda, Teads, Sklik (Seznam.cz), Performax, CPEX
Tracking pixels
Gemius Audience, Amung.us, Didomi Consent, Toplist.cz
Transparency
basic

Site quality

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

Key observations

  1. Website is a well-established Czech entertainment portal focused on TV series.
  2. Content is rich with articles, forums, and multimedia.
  3. Uses multiple third-party advertising and analytics services.
  4. Has privacy and cookie policies with consent management implemented.
  5. No direct company contact emails or phone numbers found on homepage; contact form available.
  6. No explicit security policy or incident response contacts published.
  7. No security.txt or vulnerability disclosure page detected.
  8. No suspicious or malicious content detected.
  9. Good HTTPS and SSL configuration but missing some security headers.
  10. Mobile optimized with responsive design and good navigation.
Technical notes

Notes

The website uses a custom or unknown CMS with a tech stack centered around jQuery, Google Analytics, Google Tag Manager, and multiple advertising and consent management platforms. Performance is moderate with good mobile optimization and SEO practices. The site loads multiple external scripts for analytics, advertising, and user tracking, which may impact load times. There is no evidence of modern JavaScript frameworks or CMS platforms like WordPress or Drupal. Hosting provider details are not disclosed. The site is well-structured with clear navigation and consistent branding, but could benefit from modernization and performance optimization.
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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