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Security report for supa24.com

VANDERBERG MEDIA SE · Real Estate · Czech Republic

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

69/100

Risk levelMedium

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

Superapartments 24 is a Czech Republic-based real estate platform specializing in international apartment listings for sale and rent, primarily in the United States. The company operates a professional website offering services to estate agencies and private sellers, including legal assistance, advertising, and mortgage services. The platform targets a broad audience of property buyers, renters, and real estate professionals, positioning itself as a niche player with strategic partnerships and a growing market presence. Technically, the website is built on modern web technologies including React and Next.js, with integrations for Google Tag Manager, Google reCAPTCHA, and CookieYes for privacy compliance. The site demonstrates good mobile optimization, SEO practices, and moderate performance. Hosting details are not explicit but DNS is managed via Cloudflare, enhancing availability and resilience. From a security perspective, the site enforces HTTPS and uses reCAPTCHA to protect forms, with cookie consent mechanisms in place. However, DNSSEC is not enabled and some security headers are missing, indicating room for improvement. No critical vulnerabilities or exposed sensitive data were detected. The WHOIS data aligns well with the business profile, supporting legitimacy. Overall, the website presents a trustworthy and professional front with good compliance and technical maturity. Strategic improvements in security headers, DNSSEC, and incident response transparency would further enhance its security posture and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
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. 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';…
  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Cloudflare, Google APIs

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching supa24.com

This scan found 21 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
52
Security headers
40
Email security
85
DNS health
85
Network security
100
GDPR outside view
50
Average
69

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 supa24.com, from OffSeq Breach.

Total records
6
Employees
0
Customers
6
Third parties
0
Weak passwords
17%

2 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 supa24.com.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

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 real estate sector, focusing on apartment listings for sale and rent with a business model centered on advertising and value-added services such as legal and mortgage assistance. Its market positioning is that of a specialized platform with international reach, leveraging partnerships with legal and construction firms to enhance service offerings. Revenue streams likely include advertising fees, premium listing services, and ancillary services. The target customers include estate agencies, private sellers, and property buyers/renters. Growth indicators include recent domain registration and active job postings. The partnership ecosystem includes domains like vanderbergmedia.com and metrobau.com, indicating a collaborative approach to service delivery.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enforced and use of Google reCAPTCHA to mitigate automated abuse. Cookie consent mechanisms align with GDPR requirements. However, the absence of DNSSEC and some key security headers such as Content-Security-Policy and X-Frame-Options suggests incomplete implementation of best practices. No incident response or vulnerability disclosure information is publicly available, which could hinder rapid response to security events. Data protection practices appear adequate for the business type, but formal security policies and certifications are not evident. Overall, the security posture is solid but could benefit from enhancements in DNS security, header policies, and transparency.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve domain security.
  2. Implement and publish a security.txt file to facilitate vulnerability reporting and improve incident response readiness.
  3. Add and enforce security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  4. Provide explicit incident response contact information and security policies on the website to enhance trust and compliance.
  5. Regularly audit third-party scripts and dependencies to identify and remediate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
VANDERBERG MEDIA SE
Description
Superapartments 24 is a real estate platform offering listings for sale and rent of apartments primarily in the United States. It targets estate agencies and private sellers to list properties and provides services such as legal assistance, advertising, and mortgage services.
Key services
Apartment listings for sale and rent, Legal services, Advertising services for estate agencies, Mortgage and financial advisory, Professional photography and virtual tours
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare DNS, Google Tag Manager, Google reCAPTCHA v3, CookieYes cookie consent
Frameworks
Next.js
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA v3 implemented
  • Cookie consent with opt-in
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
cdn-cookieyes.com
Marketing tools
CookieYes
Transparency
good

Site quality

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

Key observations

  1. Website is a professional real estate listing platform targeting international markets.
  2. Clear GDPR and cookie compliance with consent mechanisms.
  3. Multiple external trusted partners and service providers linked.
  4. No signs of malicious or suspicious content.
  5. Security posture is good but can be improved with additional headers and DNSSEC.
  6. WHOIS data supports legitimacy and consistency of the business.
Technical notes

Notes

The website is built using modern JavaScript frameworks, primarily React and Next.js, indicating a contemporary and scalable architecture. It integrates third-party services such as Google Tag Manager for analytics and CookieYes for cookie consent management. The site is mobile optimized with responsive design and good SEO metadata. Hosting details are not explicit but DNS is managed via Cloudflare, which provides performance and security benefits. Performance is moderate, with room for optimization. Accessibility features are basic but present. The technical stack supports a professional user experience but could improve in security header implementation and DNS security.
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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