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Security report for cuni.cz

Univerzita Karlova · Education · Czech Republic

Medium risk. 4 critical or high findings in GDPR outside view and Security headers.

Security score

73/100

Risk levelMedium

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

Charles University (Univerzita Karlova) is a prestigious and historic public university in the Czech Republic, providing comprehensive higher education and research services. The website reflects a mature digital presence with a focus on academic content, student and staff resources, and public engagement. The institution maintains a strong market position as a leading educational entity in the region. Technically, the site employs modern JavaScript libraries, analytics tools, and responsive design elements, ensuring a good user experience across devices. Security posture is solid with HTTPS enforcement and privacy-conscious analytics, though some security headers and incident response details could be improved. Overall, the site is trustworthy, professionally maintained, and compliant with GDPR and cookie regulations.

Scanned

This is an earlier scan of cuni.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

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: Google Analytics, Facebook, LinkedIn, YouTube, Google APIs

      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 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 cuni.cz

This scan found 18 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
85
Security headers
40
Email security
85
DNS health
90
Network security
100
GDPR outside view
40
Average
73

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 cuni.cz, from OffSeq Breach.

Total records
13,888
Employees
328
Customers
11,876
Third parties
1,684
Weak passwords
12%

Latest record dated 2026-06-18 · 412 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 cuni.cz.

Select it in the checkout above.

Masked preview

  • –hk.cuni.cz2026-06-18
  • –idp.cuni.cz2026-06-15
  • –idp.cuni.cz2026-06-10
  • –login-veda.is.cuni.cz2026-06-07
  • –cuni.cz2026-05-30

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

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

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

Business context

Business profile

The university operates in the education and government sectors, targeting students, academics, researchers, and the public. Its business model is primarily public funding supplemented by research grants and services. The website supports multiple user segments with dedicated content for students, staff, alumni, and applicants. Partnerships with other academic and research institutions are evident through linked domains. The presence of multiple social media channels and event calendars indicates active community engagement. The domain age and WHOIS data confirm a long-standing and legitimate operation.

Security posture

The website demonstrates a good security baseline with HTTPS and cookie consent mechanisms. Use of Matomo analytics suggests a privacy-aware approach. However, the absence of explicit security headers and incident response contacts represents an area for enhancement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The site lacks a published security.txt file or dedicated vulnerability disclosure policy, which could improve transparency and incident handling readiness.

Recommendations

  1. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Publish a security.txt file and provide clear incident response contact information to facilitate vulnerability reporting and improve trust.
  3. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  4. Enhance accessibility features to meet higher standards and improve user experience for all visitors.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and best practices.

Contact details published on the site

Addresses
Legal name
Univerzita Karlova
VAT number
CZ00216208
Registration number
00216208
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Univerzita Karlova
Description
Charles University (Univerzita Karlova) is a major educational and research institution in the Czech Republic providing higher education, research, and community services. It offers academic programs, research initiatives, and public events.
Key services
Higher education, Research, Academic events, Student support, Alumni relations
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 3.7.1, bxSlider, Bootstrap, Google Fonts, Matomo Analytics, Google Tag Manager, Google Maps Embed
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner with granular consent
  • No exposed sensitive data in HTML
  • Use of Matomo for privacy-respecting analytics

Analytics and tracking

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

Advertising

Tracking pixels
Matomo
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Comprehensive cookie consent and privacy mechanisms are implemented.
  3. Multiple official social media channels linked.
  4. No signs of suspicious or malicious content.
  5. WHOIS data supports legitimacy and long-term operation.
  6. No explicit security.txt or incident response contacts found.
  7. Use of Matomo analytics indicates privacy-conscious tracking.
Technical notes

Notes

The website uses a combination of jQuery, bxSlider, Bootstrap, and Google Fonts, indicating a hybrid approach with some legacy and modern components. Analytics are handled via Matomo and Google Tag Manager, balancing privacy and marketing needs. The site is hosted likely on Czech infrastructure with domain name servers pointing to ces.net. Performance is moderate with room for optimization. The site is mobile responsive and SEO optimized with proper meta tags and Open Graph data. No major technical debt or critical issues were identified, but modernization of some scripts and enhanced security headers would be beneficial.
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. 74/100Medium26 findingsView report
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