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Security report for financnisprava.cz

Finanční správa České republiky · Government · Czech Republic

Low risk. 1 critical or high finding in SSL/TLS.

Security score

83/100

Risk levelLow

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

Finanční správa České republiky operates as the official financial administration authority of the Czech Republic, providing tax collection, customs regulation, and public financial services. The website serves as a key portal for taxpayers and businesses to access tax forms, payment options, and official announcements. It maintains a strong market position as a government entity with a clear focus on transparency and public service. The site is well-branded and consistent with government standards, targeting Czech residents and international partners involved in financial matters. Technically, the website employs modern web technologies including jQuery, Google Fonts, and integrates Cookiebot for GDPR-compliant cookie management. Analytics are handled via Matomo and Google Analytics, reflecting a moderate level of digital maturity. The site is mobile-optimized and accessible, with good SEO practices and clear navigation. From a security perspective, the site enforces HTTPS and uses cookie consent mechanisms to comply with privacy regulations. However, it lacks visible HTTP security headers and a published security policy or vulnerability disclosure page. No critical vulnerabilities or exposed sensitive data were detected. The absence of WHOIS data is consistent with CZ NIC policies for government domains and does not detract from the site's legitimacy. Overall, the website presents a low-risk profile with strong business credibility and compliance posture. Strategic recommendations include enhancing security headers, publishing incident response and vulnerability disclosure information, and improving transparency around security policies to further strengthen trust and resilience.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 100 · Low
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

1 finding rated critical or high. Fix these first.

  1. 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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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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
75
Security headers
95
Email security
70
DNS health
60
Network security
100
GDPR outside view
100
Average
83

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 Finanční správa České republiky is positioned as a critical government agency responsible for tax and customs administration in the Czech Republic. Its business model is service-oriented, focusing on regulatory compliance, tax collection, and public communication. The portal supports a wide user base including individual taxpayers, businesses, and international entities. The presence of related domains such as forms.fs.gov.cz indicates an integrated ecosystem of government services. The agency leverages partnerships with trusted analytics and cookie consent providers to maintain compliance and operational efficiency. Growth indicators include ongoing modernization efforts such as IP telephony and digital tax filing portals. The agency's operations are transparent and supported by comprehensive privacy and cookie policies.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and a robust cookie consent mechanism that allows granular user control. The use of Cookiebot and Matomo indicates attention to privacy and analytics compliance. However, the absence of HTTP security headers such as Content Security Policy, HSTS, and X-Frame-Options represents an area for improvement. No exposed sensitive information or vulnerable libraries were detected in the HTML content. The lack of a published security policy or incident response contact limits transparency in security governance. Overall, the site is secure for public use but could benefit from enhanced security best practices and formal vulnerability disclosure channels.

Recommendations

  1. Implement standard HTTP security headers (CSP, HSTS, X-Frame-Options) to mitigate common web attacks.
  2. Publish a security policy and incident response contact information to improve transparency and trust.
  3. Establish and publicize a vulnerability disclosure program, including a security.txt file.
  4. Regularly audit third-party scripts and libraries to ensure no vulnerabilities are introduced.
  5. Enhance accessibility and mobile optimization continuously to maintain user experience standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Finanční správa České republiky
Description
Finanční správa České republiky is the Czech Republic's financial administration authority responsible for tax collection, customs, and related financial regulatory activities.
Key services
Tax filing and collection, Customs regulation, International cooperation, Public information and support
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.5.1, Google Fonts (Poppins, Roboto), Cookiebot for cookie consent, Matomo analytics
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Matomo, Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google
Tracking pixels
Matomo
Marketing tools
Cookiebot
Transparency
good

Site quality

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

Key observations

  1. Website is official Czech government financial administration portal
  2. Content is in Czech with English language option
  3. Comprehensive cookie consent and privacy policy present
  4. No WHOIS data available publicly, likely due to CZ NIC policies
  5. No signs of malicious or suspicious content
  6. Uses Matomo and Google Analytics for traffic analysis
  7. Cookiebot used for GDPR-compliant cookie management
  8. Multiple external links to government and trusted domains
  9. No visible security.txt or vulnerability disclosure page
  10. No explicit contact emails found in HTML snippet
Technical notes

Notes

The website is built using standard web technologies including jQuery 3.5.1 and Google Fonts, with Cookiebot managing cookie consent and Matomo providing analytics. The site is mobile responsive and includes accessibility features such as skip links and ARIA roles. Performance is moderate, with preloading of fonts and scripts to optimize loading times. The absence of a detected CMS suggests a custom or government-specific platform. Hosting details are not explicit but the domain and content indicate government infrastructure. The site uses HTTPS with a valid SSL configuration. There is room for technical improvement in security headers and formal documentation of security practices.
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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