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Security report for 4kohl.cz

4köhl s.r.o. · Real Estate · Czech Republic

Medium risk. 8 critical or high findings in GDPR outside view, Email security and 1 other check.

Security score

62/100

Risk levelMedium

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

4köhl s.r.o. is a small Czech construction company specializing in residential and non-residential building projects, including reconstructions and infrastructure such as transport and water management structures. Founded in 2019, the company positions itself as a reliable and sustainable builder with a professional team. The website reflects a modern, well-structured digital presence with clear service offerings and a portfolio of completed projects. Technically, the site uses modern web standards and responsive design but lacks advanced security headers and privacy compliance documentation. The security posture is basic, with no visible incident response or vulnerability disclosure mechanisms. Overall, the company appears legitimate and professional, but improvements in security and privacy compliance are recommended to enhance trust and regulatory adherence.

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

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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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';…

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Keep watching 4kohl.cz

This scan found 23 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
95
Security headers
15
Email security
60
DNS health
75
Network security
100
GDPR outside view
25
Average
62

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.

Brand lookalikes

Add-on

Domains that imitate 4kohl.cz and could be used for phishing or spoofed email, tracked in OffSeq Breach.

Tracked
3
Registered
3
Resolving
3
High or critical
0

Last checked 2026-06-20

Masked preview

  • ko•••.czMediumomission
  • 4•••.kohl.czLowsubdomain
  • 4k•••.hl.czLowsubdomain

See the full lookalike list

A one-off add-on that lists up to 20 of the highest-risk lookalikes of 4kohl.cz with registration, mail-server, certificate and DNS signals.

Select it in the checkout above.

Lookalike data refreshes continuously. Monitoring on Breach alerts you when a variant is registered, gains a mail server or starts serving HTTPS.

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 company operates in the construction and real estate sectors, targeting clients in the Czech Republic needing building and infrastructure services. Its business model is service-oriented, focusing on quality and sustainability. The website demonstrates a clear market position as a small but progressive firm with a dedicated team. Contact details and staff profiles enhance credibility. No partnerships or subsidiaries are indicated. The absence of privacy and cookie policies suggests a gap in compliance that could affect client trust and legal standing. The company’s digital footprint is modest but professional, with potential for growth in digital marketing and security maturity.

Security posture

The website uses HTTPS (assumed from URL), but no security headers were detected in the provided data. There is no privacy policy or cookie consent mechanism, indicating GDPR compliance gaps. No incident response or vulnerability disclosure information is present. The lack of security best practices such as CSP or HSTS headers reduces the security score. No exposed sensitive data or vulnerable libraries were identified. Overall, the security posture is basic and requires enhancements to meet modern standards and regulatory requirements.

Recommendations

  1. Implement a comprehensive privacy policy and cookie consent mechanism to ensure GDPR compliance.
  2. Add security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options.
  3. Establish and publish an incident response contact channel and vulnerability disclosure policy.
  4. Conduct regular security audits of third-party scripts and dependencies.
  5. Enhance website accessibility and SEO by adding ARIA attributes and structured data.

Contact details published on the site

Addresses
Legal name
4köhl s.r.o.
VAT number
CZ14362481
Registration number
14362481
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
4köhl s.r.o.
Description
4köhl s.r.o. is a construction company based in Orlová, Czech Republic, specializing in the construction of residential and non-residential spaces, reconstructions, transport and water management structures. The company emphasizes quality, reliability, and sustainable construction practices.
Key services
Construction of residential spaces, Construction of non-residential spaces, Reconstruction, Transport infrastructure construction, Water management construction, Sustainable construction practices
Content quality
good
Branding
consistent

Technology

Stack
JavaScript (ES Modules), SVG icons, CSS (Tailwind CSS or similar utility classes), Google Maps embed
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
30/100

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with rich content and multimedia.
  2. No privacy or cookie policies found, which is a compliance gap.
  3. Contact information is detailed and professional with multiple staff profiles.
  4. No visible security headers or explicit security policies.
  5. No analytics or tracking scripts detected in the provided HTML.
  6. No forms present on the main page; contact is via email and phone.
  7. Use of modern web technologies and responsive design.
  8. WHOIS data supports legitimacy and business consistency.
Technical notes

Notes

The website is built with modern JavaScript modules and uses SVG icons and utility-first CSS classes, likely Tailwind CSS. It embeds Google Maps for location display and hosts images on a media CDN. The site is mobile responsive and well-structured with semantic HTML. Performance is moderate, with video backgrounds and image galleries that may impact load times. No CMS or major frameworks were detected. Hosting is via WEDOS, a Czech hosting provider. There is no evidence of analytics or tracking scripts, which reduces privacy concerns but also limits marketing insights. Technical debt appears low, but security and privacy implementations need improvement.
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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