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Security report for arboret.cz

Horizon Holding · Real Estate · Czech Republic

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

50/100

Risk levelMedium

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

The website www.arboret.cz represents a real estate development project by Horizon Holding, focusing on modern residential apartments in Prague 4 - Záběhlice. The project offers a variety of apartment sizes with amenities such as terraces and balconies, targeting individuals and families seeking quality urban living with good transport links and access to nature. The site is professionally designed with clear navigation and relevant content, supporting a positive user experience. Technically, the website employs modern front-end frameworks including Bootstrap and uses analytics and marketing tools such as Google Tag Manager and Microsoft Clarity. The site is mobile-optimized and implements GDPR-compliant cookie consent mechanisms. However, there is no evidence of a CMS or hosting provider details, and some security best practices like security headers are missing. From a security perspective, the site uses HTTPS and has no visible vulnerabilities or exposed sensitive data. The cookie consent and privacy policy indicate a commitment to privacy compliance. The absence of WHOIS data for the domain is a concern, reducing trust from a domain registration standpoint, but the website content and business information appear legitimate and professional. Overall, the website presents a trustworthy and professional front for the real estate project, with room for improvement in security policy transparency and domain registration clarity.

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

7 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: Google Analytics, Facebook, 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';…

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

Keep watching arboret.cz

This scan found 24 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

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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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
45
Email security
70
DNS health
75
Network security
20
GDPR outside view
25
Average
50

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

Horizon Holding positions itself as a leading real estate developer with a portfolio of projects housing over 1800 families and plans for over 4000 new units. The Arboret project targets the residential market in Prague, emphasizing modern living spaces with good infrastructure and natural surroundings. The business model revolves around property development and sales, supported by digital marketing and direct customer engagement. The company leverages social media and online presence to build trust and attract buyers. The partnership ecosystem includes its parent company Horizon Holding, which provides brand strength and operational support. Growth indicators include ongoing and planned developments, suggesting a stable and expanding market presence.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enforced and cookie consent mechanisms in place, supporting GDPR compliance. However, the lack of security headers such as Content-Security-Policy and absence of published security policies or incident response plans indicate gaps in security posture. No vulnerabilities or exposed sensitive data were detected in the content. The missing WHOIS data for the domain is a notable risk factor, potentially indicating privacy protection or registration issues. Overall, the security culture appears functional but could benefit from enhanced transparency and technical controls.

Recommendations

  1. Implement standard security headers (CSP, X-Frame-Options, X-Content-Type-Options) to improve protection against common web attacks.
  2. Publish a clear security policy and incident response information to enhance transparency and user trust.
  3. Add a security.txt file to facilitate vulnerability disclosure and improve security communication.
  4. Investigate and resolve the missing WHOIS data issue to improve domain registration trustworthiness.
  5. Continue maintaining GDPR compliance and regularly review cookie consent mechanisms for evolving privacy regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Horizon Holding
Description
Projekt Arboret nabízí moderní byty v Praze 4 - Záběhlice s dobrou dopravní dostupností, občanskou vybaveností a blízkostí přírody. Bytový dům nabízí 104 bytů o dispozicích 1+kk až 4+k s terasami, balkony nebo předzahrádkami.
Key services
Development and sale of residential apartments, Real estate project marketing
Content quality
good
Branding
consistent

Technology

Stack
Bootstrap, FontAwesome, Glightbox, Swiper, AOS (Animate On Scroll), Google Tag Manager, Microsoft Clarity, Seznam RC.js
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

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

Advertising

Ad networks
Google Ads
Tracking pixels
Microsoft Clarity, Google Analytics (via GTM)
Marketing tools
Microsoft Clarity
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professionally presented and relevant to real estate development.
  3. Cookie consent and privacy policy are implemented in compliance with GDPR.
  4. WHOIS data is missing, which is unusual and reduces domain trust.
  5. Contact information is clearly provided with company email and phone.
  6. No explicit security policies or incident response information published.
  7. Use of modern web technologies and analytics tools is evident.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern front-end technology stack including Bootstrap for responsive design, FontAwesome for icons, and JavaScript libraries such as Glightbox, Swiper, and AOS for enhanced user experience. Analytics and marketing tools include Google Tag Manager and Microsoft Clarity, enabling user behavior tracking and advertising. The site is mobile-optimized and has good SEO metadata. However, no CMS or hosting provider information is evident, and performance is moderate. There is an opportunity to improve accessibility features and implement additional 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

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