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Security report for cnb.cz

Česká národní banka · Finance · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

67/100

Risk levelMedium

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

The Česká národní banka (CNB) is the central bank of the Czech Republic, responsible for monetary policy, financial market supervision, currency issuance, and financial stability. The website reflects a mature, authoritative government institution with comprehensive information and services targeting the general public, financial professionals, and media. The CNB maintains a strong market position as a key financial regulator and monetary authority in the Czech Republic. Technically, the website is built on OpenCms, employs modern web technologies including Google Analytics and reCAPTCHA Enterprise, and demonstrates good performance, accessibility, and mobile optimization. Security posture is strong with HTTPS enforcement and cookie consent mechanisms, although explicit security headers could be more visible. The absence of WHOIS data is noted but likely due to registry policies and does not detract from the site's legitimacy given its official nature and content. Overall, the CNB website is professional, trustworthy, and well-maintained, serving as a critical communication channel for the institution.

Scanned

This is an earlier scan of cnb.cz. 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

6 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: Google Analytics, Facebook, Twitter, LinkedIn, YouTube, Google Ads

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

  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 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';…

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Keep watching cnb.cz

This scan found 22 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
77
Security headers
30
Email security
70
DNS health
85
Network security
100
GDPR outside view
40
Average
67

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 cnb.cz, from OffSeq Breach.

Total records
159
Employees
0
Customers
151
Third parties
8
Weak passwords
14%

8 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 cnb.cz.

Select it in the checkout above.

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

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Technical appendix

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

Business context

Business profile

CNB operates as a government essential entity in the finance sector, providing regulatory oversight, monetary policy implementation, and public financial education. Its business model is non-commercial, focused on public service and financial system stability. The website supports transparency with extensive publications, news, and statistical data. The institution leverages partnerships with official subdomains and maintains active social media presence to engage stakeholders. Growth indicators include ongoing updates, educational initiatives, and digital service enhancements. The CNB's ecosystem includes visitor centers and historical archives, reinforcing its public engagement strategy.

Security posture

The CNB website exhibits a high security maturity level with HTTPS, reCAPTCHA Enterprise integration, and a comprehensive cookie consent framework aligned with GDPR. No critical vulnerabilities or exposed sensitive data were detected. However, explicit security headers such as X-Frame-Options and Content-Security-Policy are not clearly visible in the HTML source, which could be improved. Incident response and vulnerability disclosure information are not publicly available, which is common for government sites but could enhance transparency. Overall, the security posture is robust, supporting the institution's trustworthiness and compliance obligations.

Recommendations

  1. Implement and explicitly document security headers like X-Frame-Options, X-Content-Type-Options, and Referrer-Policy to enhance protection against common web attacks.
  2. Publish a dedicated vulnerability disclosure or security contact page to improve transparency and encourage responsible reporting.
  3. Regularly audit third-party scripts and dependencies to mitigate risks from external libraries.
  4. Enhance incident response visibility by providing clear security contact channels or policies.
  5. Maintain up-to-date CMS and software components to reduce technical debt and security risks.

Contact details published on the site

Addresses
Legal name
Česká národní banka
Registration number
IČO 48136450
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Česká národní banka
Description
ČNB is the central bank of the Czech Republic, responsible for monetary policy, financial market supervision, crisis resolution, and issuance of currency. It operates under the Constitution of the Czech Republic and the Act No. 6/1993 Coll., on the Czech National Bank.
Key services
Monetary policy implementation, Financial market supervision and regulation, Currency issuance (banknotes and coins), Financial stability and crisis resolution, Statistical data publication, Consumer protection in financial services, Educational resources and public communication
Content quality
excellent
Branding
consistent

Technology

Stack
Google Analytics, Google reCAPTCHA Enterprise, jQuery, jQuery UI (datepicker), Google Charts
Frameworks
OpenCms (inferred from module paths)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA Enterprise for bot protection
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Secure input fields with input validation (oninput event)

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
DoubleClick
Transparency
good

Site quality

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

Key observations

  1. Official Czech National Bank website with comprehensive content and services.
  2. No WHOIS data available, possibly due to registry policy or privacy.
  3. Strong HTTPS and security practices observed.
  4. Cookie consent and privacy policies are well implemented.
  5. Multiple official social media channels linked.
  6. No signs of malicious or suspicious content.
  7. Website uses OpenCms CMS and modern web technologies.
  8. Good accessibility and mobile optimization.
  9. No vulnerability disclosures or incident response contacts found publicly.
Technical notes

Notes

The website is powered by OpenCms, a Java-based CMS, and uses modern front-end technologies including jQuery, Google Charts, and Google reCAPTCHA Enterprise. Performance is moderate with good mobile responsiveness and accessibility features. SEO is supported by proper meta tags and structured navigation. The site integrates Google Analytics and Tag Manager for user behavior tracking, balanced with GDPR-compliant cookie consent mechanisms. Hosting details are not explicit but HTTPS and security practices indicate a professionally managed infrastructure. Opportunities exist to improve explicit security headers and further optimize performance.
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. 67/100Medium30 findingsView report
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