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Security report for cz-mesta.eu

as4u.cz, s.r.o. · Other · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

65/100

Risk levelMedium

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

The website www.cz-mesta.eu serves as an encyclopedic resource detailing nearly 1400 towns and settlements in the Czech Republic, focusing on their urban development and historical context. It is published in collaboration with the Association of Historical Settlements of Bohemia, Moravia, and Silesia and uses a professional publishing system (Public4u). The content is rich with illustrations and historical data, targeting a general audience interested in cultural heritage and urban studies. Technically, the site employs a mix of established JavaScript libraries such as jQuery, Leaflet.js for mapping, and Swiper.js for sliders, built on the Public4u CMS platform. The site is mobile-optimized with good navigation and SEO practices, though accessibility features are basic. Performance is moderate, with no evident hosting provider information. From a security perspective, the site uses HTTPS but lacks visible security headers and explicit privacy or cookie policies, which lowers its compliance posture. No vulnerabilities or exposed sensitive data were detected in the HTML content. WHOIS data is privacy protected by EURid, which is typical for .eu domains, and no suspicious registration patterns were found. Contact information is limited to an email in meta tags and a login link, with no phone numbers or social media presence. Overall, the site is a credible, niche informational resource with moderate technical maturity and some gaps in privacy and security best practices. Strategic improvements in privacy disclosures, security headers, and incident response information would enhance trust and compliance.

Scanned

This is an earlier scan of cz-mesta.eu. View the latest report

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

7 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. 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 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 cz-mesta.eu

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.

Daily monitoring

Recommended

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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
40
Email security
60
DNS health
75
Network security
100
GDPR outside view
40
Average
65

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

The website operates in the cultural and educational sector, providing a specialized encyclopedic service about Czech towns and their urban development. It is positioned as a niche resource with collaboration from a historical association, enhancing its credibility. The business model appears to be informational publication, likely supported by the parent company as4u.cz, s.r.o., which also provides the CMS platform. The target audience includes researchers, historians, students, and the general public interested in Czech urban history. The site shows consistent branding and professional content but lacks broader marketing or social media engagement. Partnerships with related historical sites and the CMS provider indicate a focused ecosystem. Growth potential may be limited by the niche focus but stable due to authoritative content.

Security posture

The website demonstrates a basic security posture with mandatory HTTPS usage but lacks implementation of key security headers such as Content Security Policy, HSTS, and X-Frame-Options. No explicit privacy or cookie policies are present, which is a compliance gap under GDPR. The absence of incident response contacts or vulnerability disclosure mechanisms reduces readiness for security events. No known vulnerabilities or exposed sensitive data were found in the HTML content. The use of common, well-maintained libraries reduces risk, but the site would benefit from enhanced security controls and transparency to improve trust and compliance.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance and consent mechanisms.
  2. Add security headers including Content Security Policy, HSTS, X-Frame-Options, and X-Content-Type-Options.
  3. Publish incident response and vulnerability disclosure information to improve security transparency.
  4. Enhance accessibility features to meet WCAG standards for broader user inclusivity.
  5. Increase contact information transparency, including phone numbers and social media presence, to improve business credibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
as4u.cz, s.r.o.
Description
Encyklopedie téměř 1400 sídel na území České republiky s popisem urbanistického vývoje, doplněná ilustracemi a publikovaná ve spolupráci se Sdružením historických sídel Čech, Moravy a Slezska od roku 2025.
Key services
urbanistic development descriptions, historical and contemporary illustrations, encyclopedia content online
Content quality
good
Branding
consistent

Technology

Stack
jQuery, jQuery UI, Leaflet.js, Swiper.js
Frameworks
Public4u CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • HTTPS usage implied by og:url with https protocol
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. WHOIS data is not publicly available due to EURid privacy policy.
  3. Website uses a custom CMS (Public4u) with common JS libraries.
  4. No explicit privacy or cookie policies found despite cookie info link.
  5. Contact email is present in meta tags but no visible contact page or phone numbers.
  6. No social media links detected.
  7. Content is focused on Czech towns and urban development, suitable for general audiences.
  8. No advertising or tracking scripts detected.
  9. Site is mobile optimized and has good navigation and content structure.
Technical notes

Notes

The website is built on the Public4u CMS platform, utilizing JavaScript libraries such as jQuery, jQuery UI, Leaflet.js for interactive maps, and Swiper.js for image sliders. The HTML is well-structured with appropriate meta tags for SEO and Open Graph for social sharing. Mobile optimization is good, with responsive design and a mobile menu. Performance is moderate, with no evident heavy scripts or third-party trackers. However, the site lacks modern security headers and explicit privacy compliance features. Hosting details are not disclosed, and no CDN or cloud provider is identified. Overall, the technical implementation is solid for an informational site but could be modernized with enhanced security and privacy features.
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. 65/100Medium31 findingsView report
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