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Security report for ostrava.cz

Municipality of the city Ostrava · Government · Czech Republic

Medium risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

74/100

Risk levelMedium

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

The Statutory City of Ostrava's official website serves as a comprehensive portal for residents, visitors, and businesses, providing city news, administrative contacts, visitor information, and business investment resources. The site is well-structured and professionally designed, targeting a broad audience including expats and tourists. Technically, the site is built on the Plone CMS platform, utilizes jQuery and Matomo analytics, and implements cookie consent mechanisms aligned with privacy best practices. Security posture is solid with HTTPS enforced and form validation in place, though improvements can be made by adding explicit security headers and publishing security policies. The absence of WHOIS data is a notable gap, but the presence of official contact details and consistent branding supports the site's legitimacy. Overall, the website is a reliable and authoritative source for Ostrava city information.

Scanned

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

4 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

    • High

      Third-party services without privacy policy

      Detected services: LinkedIn, YouTube, Cloudflare

      What to do: Document all third-party data sharing in your privacy policy

  2. 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.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching ostrava.cz

This scan found 19 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
62
Security headers
85
Email security
75
DNS health
80
Network security
100
GDPR outside view
40
Average
74

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 ostrava.cz, from OffSeq Breach.

Total records
544
Employees
0
Customers
526
Third parties
18
Weak passwords
9%

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 ostrava.cz.

Select it in the checkout above.

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

Technical appendix

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

Business context

Business profile

Ostrava's municipal website positions itself as the primary digital gateway for city governance, tourism, and business investment. It leverages partnerships with local tourism and business promotion sites, enhancing its ecosystem. The business model is government-focused, providing public services and information rather than commercial revenue streams. The site targets diverse user segments including local citizens, expats, investors, and visitors. Its consistent branding and comprehensive content indicate a mature digital presence. However, the lack of WHOIS transparency and absence of explicit privacy and security policies suggest areas for governance improvement. The integration of social media and analytics tools reflects a modern approach to engagement and data-driven decision-making.

Security posture

The website demonstrates a moderate to strong security posture with mandatory HTTPS, cookie consent with opt-in/out options, and form validation including anti-spam measures. However, the lack of visible security headers such as Content-Security-Policy and X-Frame-Options represents a potential risk vector. No vulnerabilities or exposed sensitive data were detected in the content. The absence of a published security policy or incident response contact limits transparency and user trust in security matters. The site would benefit from implementing a vulnerability disclosure program and publishing a security.txt file to enhance its security maturity and compliance with best practices.

Recommendations

  1. Implement and publish explicit security headers (CSP, X-Frame-Options, X-Content-Type-Options) to mitigate common web attacks.
  2. Publish a clear privacy policy and terms of service accessible from the homepage to improve transparency and compliance.
  3. Establish and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Improve WHOIS registration transparency to enhance trust and legitimacy perception.
  5. Regularly audit and update third-party libraries and analytics configurations to ensure no vulnerabilities or privacy issues.

Contact details published on the site

Addresses
Legal name
Municipality of the city Ostrava
VAT number
CZ00845451
Registration number
00845451
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Municipality of the city Ostrava
Description
Official website of the Statutory City of Ostrava providing information about the city, city authority, business, strategic projects, visitor information, news, and contact details.
Key services
City news and updates, Visitor information and tourism, City authority contacts and administration, Business and investment information, Strategic projects information, Contact forms and support
Content quality
good
Branding
consistent

Technology

Stack
jQuery, Matomo Analytics, Plone CMS, JavaScript, CSS, HTML5
Frameworks
Plone
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with opt-in/out
  • Form validation with anti-spam question

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Marketing tools
Matomo Analytics
Transparency
basic

Site quality

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

Key observations

  1. Official municipal website with comprehensive city information and services.
  2. No WHOIS data available, which is unusual for a government domain.
  3. Cookie consent mechanism is implemented with detailed cookie categories.
  4. Multiple official social media accounts linked.
  5. Use of Plone CMS and Matomo analytics indicates a mature technical setup.
  6. No explicit privacy policy or terms of service found on the homepage.
  7. Contact form includes anti-spam validation and collects basic user info.
  8. No visible security.txt or vulnerability disclosure information.
  9. No security headers detected in provided data; potential area for improvement.
Technical notes

Notes

The website is built on the Plone CMS platform, a robust and secure content management system suitable for government portals. It uses jQuery for client-side scripting and Matomo for privacy-focused analytics. The site includes responsive design elements and accessibility features, providing a good user experience across devices. Performance is moderate, with some reliance on external resources such as CDN-hosted scripts and stylesheets. The cookie consent mechanism is well integrated, supporting GDPR compliance. However, the lack of explicit security headers and incomplete WHOIS data indicate areas where technical governance and infrastructure transparency could be improved to reduce risk and enhance trust.
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. 74/100Medium27 findingsView report
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