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Security report for o2universum.cz

Bestsport, a.s. · Hospitality · Czech Republic

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

77/100

Risk levelLow

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

O2 universum is a large multifunctional congress and event venue located in Prague, operated by Bestsport, a.s., a member of the PPF Group. The venue offers a wide range of spaces and services tailored for conferences, cultural, sporting, and corporate events, targeting both the general public and business clients. The website presents a professional and well-structured digital presence with comprehensive event listings and service information. Technically, the site is built on WordPress with modern analytics and marketing integrations, including Google Analytics, Microsoft Clarity, and Facebook Pixel, all managed with a clear cookie consent mechanism. Security posture is good with HTTPS enforced and privacy compliance evident, though some security headers could be improved. The absence of WHOIS data limits domain trust verification, but the overall business credibility and digital maturity are strong, supported by partnerships and social media presence.

Scanned

This is an earlier scan of o2universum.cz. View the latest report

NIS2 and GDPR posture

GDPR outside view
83/ 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

2 findings rated critical or high. Fix these first.

  1. 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  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 o2universum.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.

Daily monitoring

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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
70
Email security
70
DNS health
75
Network security
100
GDPR outside view
83
Average
77

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 o2universum.cz, from OffSeq Breach.

No leaked records found

Breach holds no records for o2universum.cz right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

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 company operates in the hospitality sector, focusing on venue rental and event hosting. It holds a strong market position in Prague as a premier congress center with a capacity of up to 10,000 people. The business model revolves around renting versatile spaces and providing event-related services such as catering and technical support. The website indicates a well-established partnership ecosystem including major brands like O2, Staropramen, Coca-Cola, and Ticketmaster, enhancing its market reach. The target audience includes both B2C (public events) and B2B (corporate clients). Growth indicators include a rich event calendar and active social media engagement. The parent company, PPF Group, adds financial and operational stability.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and a robust cookie consent framework aligned with GDPR requirements. Use of Google Tag Manager allows controlled script deployment, reducing risk exposure. However, some standard security headers such as Content-Security-Policy and X-Frame-Options are not explicitly present, representing an area for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The privacy policy is comprehensive and clearly accessible. Incident response and security policy pages are not found, which could be enhanced to improve transparency and readiness. Overall, the security risk is low but could be further mitigated by implementing recommended headers and policies.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Review and update the Referrer-Policy meta tag to a safer value than 'unsafe-url' to reduce information leakage.
  3. Publish a dedicated security policy and incident response page to improve transparency and preparedness.
  4. Regularly audit third-party scripts and plugins for vulnerabilities and update them promptly.
  5. Consider obtaining and publishing relevant security certifications or compliance attestations to boost trust.

Contact details published on the site

Addresses
Legal name
Bestsport, a.s.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bestsport, a.s.
Description
Unique and multifunctional venue in Prague for the most memorable experiences. A program full of culture and sports, with the option to of renting it for your own event.
Key services
Venue rental for conferences, congresses, cultural and sporting events, Event organization and catering, Professional equipment and sound systems
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, jQuery, Google Tag Manager, Google Analytics, Microsoft Clarity, Facebook Pixel, Tiny Slider, Magnific Popup, 3D Flipbook plugin
Frameworks
WordPress CMS
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism with opt-in
  • No exposed sensitive data in HTML
  • Use of Google Tag Manager for controlled script loading

Analytics and tracking

Services
Google Analytics, Microsoft Clarity
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Adsense
Tracking pixels
Facebook Pixel, Microsoft Clarity
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design.
  2. Strong cookie consent and privacy mechanisms implemented.
  3. No visible security or privacy policy pages beyond privacy policy.
  4. No explicit contact emails or phone numbers found in HTML content; contact likely via contact page.
  5. WHOIS data unavailable, limiting domain trust verification.
  6. Multiple trusted partner and social media links present.
  7. Use of modern analytics and marketing tools with user consent.
  8. No signs of adult or questionable content.
  9. No visible terms of service or security policy pages.
Technical notes

Notes

The website is built on WordPress CMS with a modern tech stack including jQuery, Tiny Slider, Magnific Popup, and 3D Flipbook plugins. It integrates Google Tag Manager, Google Analytics, Microsoft Clarity, and Facebook Pixel for analytics and marketing purposes. The site is mobile optimized with responsive design and good accessibility features. Performance is moderate, likely influenced by multiple external scripts and rich media content. SEO is well addressed with proper meta tags, Open Graph, and JSON-LD structured data. Hosting provider details are not explicitly found. There is an opportunity to optimize loading speed and enhance security headers to reduce technical risks.
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. 75/100Medium29 findingsView report
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