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Security report for stercentury.sk

Sterio Kino · Hospitality · Slovakia

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

57/100

Risk levelMedium

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

Sterio Kino is a regional cinema chain operating multiple locations across Slovakia, offering cinema screenings, online ticket sales, and special event programming. The website serves as a portal for customers to access cinema programs and purchase tickets online, targeting general cinema-going audiences. Technically, the site is built using modern web technologies including React and Next.js, with integrations for analytics and marketing tools such as Google Tag Manager, Facebook Pixel, and Microsoft Clarity. The site demonstrates good mobile optimization and SEO practices but lacks some accessibility features and security headers. Security posture is solid with HTTPS enforced and no visible vulnerabilities, though improvements are recommended in security headers and incident response transparency. Privacy compliance is partial, with a privacy policy present but no visible cookie consent mechanism. Overall, the website is professional and trustworthy, with a moderate risk profile primarily due to privacy and security policy gaps.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 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

9 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 Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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 X-Frame-Options header

      Prevents clickjacking attacks

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

    • 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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  • 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
72
Security headers
30
Email security
50
DNS health
80
Network security
100
GDPR outside view
10
Average
57

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 stercentury.sk, from OffSeq Breach.

Total records
15
Employees
0
Customers
15
Third parties
0
Weak passwords
13%

5 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 stercentury.sk.

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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

Sterio Kino holds a stable market position as a medium-sized cinema operator in Slovakia, leveraging multiple city-specific subdomains to serve regional audiences. Their business model focuses on entertainment and hospitality, generating revenue through ticket sales and special event promotions. The company maintains an active social media presence to engage customers and promote events. Partnerships with signage and event display providers like entradio.sk enhance their operational capabilities. The lack of visible phone contact or physical addresses on the main site suggests a focus on digital engagement. Growth opportunities may include expanding digital marketing and improving compliance with evolving data protection regulations.

Security posture

The website enforces HTTPS and integrates standard tracking and marketing scripts securely. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options reduces defense-in-depth. No explicit security or incident response policies are published, which may hinder rapid response to security incidents. The lack of a cookie consent mechanism indicates partial GDPR compliance, potentially exposing the company to regulatory risk. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security maturity is moderate but would benefit from enhanced policy transparency and technical controls.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to improve protection against common web attacks.
  2. Add a visible cookie consent banner to comply fully with GDPR and enhance user privacy transparency.
  3. Publish a dedicated security policy and incident response contact information to improve trust and readiness.
  4. Regularly audit third-party scripts and dependencies to mitigate risks from external libraries.
  5. Enhance accessibility features to improve usability for all users and comply with accessibility standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sterio Kino
Description
Kompletný program, vstupenky online, kontakt a všetky informácie o Sterio Kino.
Key services
Cinema screenings, Online ticket sales, Special events (e.g., Detské Kino, Dámsky večer)
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Facebook Pixel, Microsoft Clarity
Frameworks
Next.js, Material UI
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (via GTM), Microsoft Clarity
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Facebook Pixel, Microsoft Clarity
Marketing tools
Facebook Pixel, Microsoft Clarity
Transparency
basic

Site quality

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

Key observations

  1. Website is a regional cinema chain with multiple locations in Slovakia.
  2. Content is primarily in Slovak language.
  3. No forms detected on the main page; ticket sales likely handled on subdomains.
  4. No explicit cookie consent mechanism found, which may be a GDPR compliance gap.
  5. Social media presence is well integrated with official accounts.
  6. Use of modern web technologies and frameworks.
  7. No visible security policy or incident response contact information.
  8. No security headers detected in the provided data; potential area for improvement.
Technical notes

Notes

The website is built on a modern React and Next.js stack, leveraging Material UI for design consistency. It uses asynchronous loading of scripts and fonts to optimize performance. Analytics and marketing tools are integrated via Google Tag Manager, Facebook Pixel, and Microsoft Clarity, enabling detailed user behavior tracking. The site is mobile optimized with responsive design and good SEO metadata. However, no CMS was detected, suggesting a custom or proprietary backend. Hosting provider details are not explicit. Performance is moderate with room for improvement in accessibility and security header implementation. The site uses multiple subdomains for regional cinemas, indicating a modular architecture.
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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