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Security report for selekthuis.nl

SelektHuis · Real Estate · Netherlands

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

68/100

Risk levelMedium

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

SelektHuis is a well-established Dutch custom home builder founded in 1997, offering personalized home building services with fixed contract pricing and full customization options. The company targets individuals and families in the Netherlands seeking to build their ideal homes. Their website is professionally designed, mobile-optimized, and rich in relevant content, reflecting a mature digital presence. The business maintains active social media channels and provides comprehensive contact information, enhancing trust and accessibility. Technically, the website leverages modern technologies including Webflow CMS, Google Tag Manager, Cookiebot for consent management, and VWO for optimization. The site is hosted securely with HTTPS and employs cookie consent mechanisms, although DNSSEC is not enabled, representing a minor security gap. No advanced security policies or incident response contacts are publicly disclosed, which could be improved. The security posture is solid with secure form handling and no exposed sensitive data, but could benefit from enhanced DNS security and security headers. Privacy compliance is strong with GDPR-aligned policies and consent mechanisms. Overall, the site scores well on content quality, technical implementation, security, privacy, and business credibility, making it a trustworthy and professional platform. Strategic recommendations include enabling DNSSEC, implementing security headers, publishing a security policy and incident response contacts, and considering a vulnerability disclosure program to further enhance security and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

4 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 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

  3. 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.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching selekthuis.nl

This scan found 25 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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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
30
Email security
70
DNS health
80
Network security
100
GDPR outside view
68
Average
68

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

SelektHuis operates in the Dutch real estate sector specializing in custom home building. With over 8,000 clients served, it holds a strong market position as a reliable builder offering transparent pricing and extensive customization. The business model focuses on guiding clients through a clear 5-step building process, emphasizing client involvement and fixed pricing. Their partnership with wijzijnja.nl and presence on multiple social platforms indicate a robust ecosystem. The company targets middle to upper-middle class home buyers seeking personalized homes. Growth indicators include a comprehensive online presence and active marketing tools. No parent or subsidiary companies were identified, suggesting an independent medium-sized enterprise.

Security posture

The website demonstrates a good security maturity level with HTTPS enforced and secure form submissions via external webhook endpoints. Cookie consent is managed through Cookiebot, supporting GDPR compliance. However, the absence of DNSSEC and security headers such as Content-Security-Policy or X-Frame-Options indicates room for improvement. No incident response or security policy information is publicly available, which limits transparency in security readiness. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security posture is adequate for the business type but could be enhanced by adopting additional DNS and HTTP security measures and publishing security policies.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS integrity and prevent spoofing.
  2. Implement HTTP security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Publish a clear security policy and incident response contact information on the website.
  4. Consider establishing a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  5. Regularly review and update third-party scripts and dependencies to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
SelektHuis
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SelektHuis
Description
Wij zijn je ideale huizenbouwer. We helpen je door het hele proces, van een idee naar een ideaal. Met een vrije keuze hoe je jouw ideale woning indeelt en met vaste contractprijzen.
Key services
Custom home building, Kavel (plot) selection, Various building styles and models, Personalized home layout and options, Fixed contract pricing
Content quality
excellent
Branding
consistent

Technology

Stack
Webflow, Google Tag Manager, Cookiebot, VWO (Visual Website Optimizer), Finsweet Attributes, Uploadcare, Typekit Fonts
Platforms
Webflow CMS
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Secure form submission via external webhook

Analytics and tracking

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

Advertising

Tracking pixels
VWO
Marketing tools
Cookiebot, Finsweet Attributes, Trengo Widget
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured
  2. Comprehensive business information and contact details provided
  3. Multiple social media channels linked
  4. Cookie consent and privacy policy present and GDPR compliant
  5. No security policy or incident response information publicly available
  6. DNSSEC not enabled, which is a minor security gap
  7. Use of modern marketing and analytics tools with consent mechanisms
Technical notes

Notes

The website is built on the Webflow platform, utilizing modern front-end technologies and integrations such as Google Tag Manager, Cookiebot, VWO, and Finsweet Attributes for enhanced functionality and marketing. The site is mobile-optimized with responsive design and accessibility considerations. Performance is moderate, with lazy loading for videos and images. The use of structured data (JSON-LD) improves SEO and semantic clarity. Hosting appears stable with a reputable registrar (Combell B.V.). Technical debt is minimal, but enabling DNSSEC and adding security headers would modernize the security posture. The site uses external services for analytics, consent, and chat support, indicating a mature digital infrastructure.
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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