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Security report for osu.cz

Ostravská univerzita · Education · Czech Republic

Medium risk. 5 critical or high findings in GDPR outside view and Security headers.

Security score

75/100

Risk levelMedium

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

Ostravská univerzita is a large public university based in the Czech Republic, providing a wide range of higher education programs, research activities, and community services. The institution serves students, applicants, researchers, and alumni with comprehensive academic offerings and support services. The website reflects a well-established educational entity with consistent branding and a strong digital presence across multiple faculties and service domains. Technically, the website employs a traditional web stack with jQuery and jQuery UI libraries, along with Lightbox and FontAwesome for UI elements. The site is moderately optimized for performance and mobile responsiveness, with good SEO practices and basic accessibility features. Security measures include HTTPS enforcement and a Content Security Policy, although some additional headers could enhance security posture. From a security and compliance perspective, the site demonstrates good privacy practices with a comprehensive GDPR-compliant privacy policy and cookie consent mechanism. No critical vulnerabilities or exposed sensitive data were detected. However, the use of an outdated jQuery version and absence of explicit terms of service are areas for improvement. The WHOIS data is unavailable, which limits domain trust assessment but the official content and certifications support legitimacy. Overall, the website is professional, trustworthy, and well-suited for its educational mission. Strategic recommendations include updating JavaScript libraries, enhancing security headers, and publishing clear terms of service to further strengthen compliance and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

5 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

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

    • High

      Third-party services without privacy policy

      Detected services: Facebook, Twitter, LinkedIn, YouTube

      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';…

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Keep watching osu.cz

This scan found 15 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
90
Security headers
60
Email security
85
DNS health
90
Network security
100
GDPR outside view
25
Average
75

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 osu.cz, from OffSeq Breach.

Total records
2,916
Employees
76
Customers
2,374
Third parties
466
Weak passwords
15%

Latest record dated 2026-06-14 · 70 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 osu.cz.

Select it in the checkout above.

Masked preview

  • –moodle.osu.cz2026-06-14
  • –moodle.osu.cz2026-06-11
  • –moodle.osu.cz2026-06-10
  • –moodle.osu.cz2026-06-06
  • –moodle.osu.cz2026-05-29

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

Ostravská univerzita holds a strong regional position as a comprehensive higher education institution in the Czech Republic. Its business model focuses on education, research, and community engagement, supported by multiple faculties and specialized centers. The university leverages partnerships and international cooperation to enhance its offerings. Revenue streams likely include tuition, research grants, and public funding. The target audience spans prospective and current students, academic staff, researchers, and alumni. The university's digital ecosystem includes dedicated portals for students, alumni, and research, indicating a mature operational structure. The presence of HR Award certification and multiple official social media channels reflects a commitment to quality and outreach.

Security posture

The website maintains a good security posture with HTTPS enforced and a Content Security Policy to upgrade insecure requests. Cache control headers prevent sensitive data caching. The cookie consent mechanism aligns with GDPR requirements, enhancing privacy compliance. No signs of exposed credentials, vulnerable libraries (beyond the outdated jQuery version), or security misconfigurations were found. However, the absence of additional security headers such as X-Frame-Options and Strict-Transport-Security suggests room for improvement. Incident response and vulnerability disclosure information are not publicly available, which could be enhanced to improve transparency and readiness. Overall, the site is secure for its purpose but would benefit from modern security best practices.

Recommendations

  1. Update jQuery and other JavaScript libraries to the latest secure versions to mitigate known vulnerabilities.
  2. Implement additional security headers including X-Frame-Options, X-XSS-Protection, and Strict-Transport-Security for enhanced protection.
  3. Publish a clear and accessible Terms of Service page to improve legal transparency and user trust.
  4. Establish and publicize a vulnerability disclosure policy and incident response contact to enhance security culture and responsiveness.
  5. Enhance accessibility features to meet higher compliance standards and improve user experience for all visitors.

Contact details published on the site

Addresses
Legal name
Ostravská univerzita
VAT number
CZ61988987
Registration number
61988987
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Ostravská univerzita
Description
Ostravská univerzita - Oficiální internetové stránky Ostravské univerzity.
Key services
Higher education programs, Research and innovation, International cooperation, Lifelong learning, Student support services, Publishing and cultural activities
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 1.12.2, jQuery UI 1.11.4, Lightbox, FontAwesome
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Content Security Policy present
  • Cookie consent mechanism implemented

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and navigation.
  2. No WHOIS data available, possibly due to privacy or domain registration issues.
  3. Strong presence of official university branding and multiple faculties.
  4. Comprehensive privacy and cookie policies with consent mechanism.
  5. No visible security vulnerabilities or exposed sensitive data.
  6. Use of older jQuery version may pose minor security risk.
  7. No explicit terms of service page found.
  8. Multiple official social media channels linked.
  9. No advertising or tracking networks detected.
  10. Good SEO and meta tag usage.
Technical notes

Notes

The website uses a classic web technology stack centered on jQuery 1.12.2 and jQuery UI 1.11.4, which are somewhat outdated but still functional. It incorporates Lightbox for image display and FontAwesome for icons. The site is structured with responsive CSS stylesheets targeting different screen sizes, indicating mobile optimization efforts. SEO is supported by comprehensive meta tags and Open Graph data. Performance is moderate, with no evident heavy scripts or slow-loading elements. The absence of a detected CMS suggests a custom or legacy platform. Hosting details are not explicit, but the site uses HTTPS with a valid certificate. The technical infrastructure is stable but could benefit from modernization and improved accessibility compliance.
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. 74/100Medium24 findingsView report
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