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Security report for nebezpecnejezy.cz

Other · Czech Republic

High risk. 11 critical or high findings in GDPR outside view, Email security and 3 other checks.

Security score

30/100

Risk levelHigh

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

The website 'Nebezpecnejezy.cz' is a specialized informational platform focused on providing a comprehensive database and safety information about dangerous river weirs in the Czech Republic. It serves primarily water sports enthusiasts, local authorities, and the general public interested in water safety. The site is well-established, with a domain age of over 13 years, and collaborates with recognized partners in the water sports and water management sectors. Technically, the site is built on ASP.NET Web Forms and integrates common tracking tools such as Google Analytics and Google Tag Manager. While the site offers good content quality and user experience, it lacks formal privacy and cookie policies, which is a compliance gap. Security-wise, HTTPS is used, but security headers and advanced protections are missing, indicating room for improvement. Overall, the site is trustworthy and functional but would benefit from enhanced privacy compliance and security hardening.

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

11 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

  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. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  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 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"

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

Keep watching nebezpecnejezy.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
0
Security headers
15
Email security
60
DNS health
75
Network security
20
GDPR outside view
10
Average
30

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

Nebezpecnejezy.cz occupies a niche market position as a safety and informational resource for water-related hazards in the Czech Republic. Its business model is informational and community-driven, relying on user contributions and partnerships with water management organizations. The site’s partnerships with entities like Raft.cz and Povodí river basin authorities strengthen its credibility and outreach. The target audience includes recreational water users, safety professionals, and local communities. The site’s growth potential lies in expanding its database, improving user engagement, and enhancing compliance with privacy regulations. Revenue streams are not explicit but may include sponsorships or partnerships. The ecosystem of partners indicates a collaborative approach to water safety education and awareness.

Security posture

The website demonstrates a basic security posture with HTTPS enabled and secure form mechanisms (VIEWSTATE and EVENTVALIDATION tokens). However, it lacks critical security headers such as Content-Security-Policy, HSTS, and X-Frame-Options, which are important for mitigating common web vulnerabilities. No evidence of a formal security policy or incident response contact channels was found. The absence of privacy and cookie policies also indicates compliance gaps. No vulnerabilities or exposed sensitive data were detected in the provided content. The site should prioritize implementing security headers, privacy compliance measures, and formal security documentation to improve its security maturity and user trust.

Recommendations

  1. Implement comprehensive privacy and cookie policies to comply with GDPR and other privacy regulations.
  2. Add a cookie consent mechanism to inform users and obtain consent for tracking technologies.
  3. Deploy security headers such as Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and Strict-Transport-Security.
  4. Publish a security policy and incident response contact information to enhance transparency and preparedness.
  5. Regularly audit and update third-party scripts and tracking tools to minimize security risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
Databáze nebezpečných jezů v České republice, která poskytuje přehled nejnebezpečnějších jezů, informace o jejich zabezpečení, a upozornění na rizika spojená s jezy pro vodáky a veřejnost.
Key services
databáze nebezpečných jezů, informace o zabezpečení jezů, osvětové články a novinky, mapa nebezpečných jezů, návody a doporučení pro bezpečnost
Content quality
good
Branding
consistent

Technology

Stack
ASP.NET Web Forms, JavaScript, Google Maps API, Google Tag Manager, Facebook Share Script, Google Analytics (Universal Analytics and GA4)
Frameworks
ASP.NET
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
60/100
Good practices seen
  • HTTPS usage assumed (URL is https)
  • No exposed sensitive data in HTML
  • Use of secure forms with VIEWSTATE and EVENTVALIDATION tokens

Analytics and tracking

Services
Google Analytics (Universal Analytics), Google Analytics 4 (GA4), Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Ad networks
Google DoubleClick
Tracking pixels
Facebook Share
Transparency
basic

Site quality

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

Key observations

  1. Website provides a comprehensive database of dangerous river weirs in the Czech Republic.
  2. Content is primarily in Czech language.
  3. No privacy or cookie policies found, which is a compliance gap.
  4. Contact information includes an email link and a phone number in the footer.
  5. Multiple external trusted partner links and logos are present.
  6. Use of Google Analytics and Google Tag Manager for tracking.
  7. No visible security headers or advanced security policies detected.
  8. No WAF or blocking mechanisms detected; content fully accessible.
  9. Website uses ASP.NET Web Forms technology.
  10. No social media official links detected in the content.
Technical notes

Notes

The website is built on ASP.NET Web Forms technology, indicating a traditional Microsoft web stack. It uses JavaScript for interactivity and integrates Google Maps API for geospatial visualization. Tracking is implemented via Google Analytics (both Universal and GA4) and Google Tag Manager, alongside Facebook Share scripts. The site’s performance is moderate, with basic mobile optimization and accessibility features. SEO is basic but includes meta keywords and description tags. The site lacks modern CMS indicators and appears to be a custom or legacy platform. Opportunities exist to modernize the tech stack, improve mobile responsiveness, and enhance accessibility compliance to improve user experience and technical robustness.
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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