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Security report for zednictvi-kulkus.cz

Zednictví Kulkus · Real Estate · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

51/100

Risk levelMedium

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

Zednictví Kulkus is a small, regionally focused construction and renovation company based in Perná, Czech Republic, operating since 1989. The company specializes in masonry and tiling work, turnkey renovations of residential cores and bathrooms, and offers additional services such as machine plastering and poured anhydrite and concrete floors. Their market position is that of a trusted local service provider primarily serving the South Moravian region including Mikulov, Břeclav, and Brno areas. The website reflects a professional small business with clear contact information and a focus on customer satisfaction. Technically, the website uses standard web technologies including HTML5, CSS, JavaScript, and jQuery, with integration of Google Analytics and Google Tag Manager for visitor tracking. The site is hosted likely via Wedos, a Czech hosting provider, and shows basic mobile optimization and SEO practices. However, no CMS or advanced frameworks are detected, indicating a custom or static site. From a security perspective, the site lacks visible security headers and there is no explicit privacy policy or terms of service. The cookie consent mechanism is implemented, indicating some GDPR awareness. The absence of HTTPS enforcement data and security policies suggests room for improvement in security posture. No critical vulnerabilities or malicious content were detected. Overall, the website is a functional and professional representation of a small local construction business with moderate technical maturity and basic privacy compliance. Strategic improvements in security headers, privacy documentation, and HTTPS enforcement would enhance trust and compliance.

Scanned

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

8 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

  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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  3. 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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';…

Need hands-on remediation? Email guard@offseq.com

Keep watching zednictvi-kulkus.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
0
Security headers
15
Email security
65
DNS health
85
Network security
100
GDPR outside view
40
Average
51

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

Zednictví Kulkus operates in the Real Estate sector focusing on construction and renovation services. Their competitive advantage lies in their long-standing local presence since 1989 and a comprehensive service offering tailored to residential customers in the South Moravian region. The business model is service-based with direct customer engagement. Revenue streams likely come from contracted renovation and construction projects. The target customers are homeowners and small businesses requiring masonry and renovation work. The company maintains a partnership with H-Optimal for web development. Growth indicators are not explicit but the website suggests stable local operations. No subsidiaries or parent companies are indicated.

Security posture

The current security maturity level is basic. The website implements a cookie consent banner, showing some compliance with privacy regulations. However, the lack of a privacy policy, terms of service, and security headers such as CSP or HSTS indicates gaps in security best practices. No incident response or vulnerability disclosure information is provided. The use of Google Analytics introduces moderate user tracking. There is no evidence of exposed sensitive data or vulnerable libraries. Overall, the security posture is adequate for a small business but requires enhancements to meet higher compliance and security standards.

Recommendations

  1. Implement HTTPS with strong SSL/TLS certificates and enforce HTTPS site-wide.
  2. Add comprehensive privacy policy and terms of service pages to improve compliance and transparency.
  3. Deploy security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  4. Establish an incident response contact channel and publish vulnerability disclosure information.
  5. Regularly audit third-party scripts and tracking tools to minimize privacy risks and improve user trust.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Zednictví Kulkus
Description
Firma působí od roku 1989 v obci Perná poblíž Mikulova. Nabízí kompletní rekonstrukce na klíč bytových jader, domů, koupelen a další zednické a stavební práce včetně strojního omítání a lité anhydritové a betonové podlahy. Zaměřuje se na Jihomoravský kraj.
Key services
zednické práce, obkladačské práce, rekonstrukce bytových jader, strojní omítání, lité anhydritové podlahy, lité betonové podlahy
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, JavaScript, jQuery, Google Analytics, Google Tag Manager
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
good

Security

Observed score
55/100
Good practices seen
  • cookie consent mechanism implemented
  • no exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a professional small business site for local construction services.
  2. Cookie consent mechanism is implemented and visible.
  3. No privacy policy or terms of service pages found.
  4. Contact information is clearly presented with phone, email, and physical address.
  5. No advanced security headers detected; HTTPS status unknown.
  6. Use of Google Analytics and Tag Manager for visitor tracking.
  7. No signs of malicious or suspicious content.
  8. Website content is in Czech language targeting local Czech customers.
Technical notes

Notes

The website is built using standard web technologies without a detected CMS or advanced frameworks, indicating a custom or static site. It uses jQuery 1.11.0, which is an older version and may pose security risks if not updated. Google Analytics and Tag Manager are integrated for analytics. The site loads CSS and fonts from Google Fonts and uses a favicon. Performance is moderate with basic mobile optimization and accessibility features. SEO is supported by meta tags including description and keywords. Hosting is likely provided by Wedos, a Czech hosting provider. There is an opportunity to modernize the tech stack, update libraries, and improve performance and security configurations.
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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