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Security report for hendriks.nl

Hendriks Makelaardij · Real Estate · Netherlands

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

Security score

75/100

Risk levelMedium

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

Hendriks Makelaardij is a well-established Dutch real estate brokerage firm operating since 1997, offering comprehensive services including buying, selling, mortgage advice, and insurance. The company maintains a strong local presence with multiple offices across key Dutch cities, positioning itself as a trusted local expert. The website reflects a professional and user-friendly design with clear navigation and relevant content tailored to individuals seeking real estate services in the Netherlands. Technically, the site employs modern web technologies such as Google Tag Manager, reCAPTCHA, and Cookiebot for privacy compliance and user interaction, with DNSSEC enabled for domain security. Security posture is solid with HTTPS enforced and no visible vulnerabilities, although additional security headers could enhance protection. Privacy and cookie policies are present and GDPR compliant, though no explicit security policy or incident response information is published. Overall, the website demonstrates a mature digital presence with good business credibility and moderate to high security standards.

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 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

      SSL Certificate Expires Soon

      SSL certificate expires in 20 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates
    • High

      Weak SSL Key Length

      SSL certificate uses 384-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching hendriks.nl

This scan found 17 issues across 5 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

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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
55
Security headers
55
Email security
100
DNS health
70
Network security
100
GDPR outside view
68
Average
75

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

The company targets residential real estate buyers and sellers in the Netherlands, leveraging certifications like NVM Makelaar and a quality mark to build trust. Their business model integrates brokerage with mortgage and insurance services, providing a one-stop solution. The website's content and structure support lead generation through contact forms and valuation scheduling. The presence of multiple local offices indicates a medium-sized operation with regional market penetration. Partnerships with related service providers are implied but not explicitly detailed. The company benefits from positive customer ratings and a consistent brand image, supporting competitive positioning in the Dutch real estate market.

Security posture

The website exhibits a good security maturity level with HTTPS, DNSSEC, and reCAPTCHA protecting user interactions. Cookie consent is managed via Cookiebot, indicating GDPR awareness. However, the absence of a published security policy or incident response contacts suggests room for improvement in transparency and readiness. No exposed sensitive data or vulnerable libraries were detected in the HTML content. Security headers beyond DNSSEC are not explicitly observed, which could be enhanced to mitigate risks such as clickjacking or XSS. Overall, the security posture is solid but could benefit from formalized policies and additional technical controls.

Recommendations

  1. Implement and publish a formal security policy and incident response contact information to improve transparency and user trust.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to strengthen protection against common web attacks.
  3. Consider creating and publishing a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Enhance accessibility features to improve compliance and user experience for all visitors.
  5. Regularly review and update third-party scripts and libraries to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Hendriks Makelaardij
Description
Hendriks Makelaardij verkoopt jouw huis voor de beste prijs! Maak een afspraak voor een gratis waardebepaling met een van onze makelaars!
Key services
House buying, House selling, Mortgage advice and services, Insurance services, Free property valuation
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, Google reCAPTCHA, Cookiebot, SmartSupp Chat, Tiny Slider (tns), JavaScript, CSS, HTML5
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA on forms
  • Cookie consent via Cookiebot
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Cookiebot
Marketing tools
SmartSupp Chat, Cookiebot
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and well-structured
  2. Multiple offices and local presence across Dutch cities
  3. Use of modern web technologies and security best practices
  4. Clear business focus on real estate brokerage and related services
  5. Good user engagement with forms and interactive elements
  6. No signs of malicious or suspicious content
  7. Privacy and cookie policies are present and implemented
  8. No explicit security policy or incident response information publicly available
Technical notes

Notes

The website uses a modern JavaScript-based front-end with libraries like Tiny Slider for carousels and Google services for analytics and tag management. Cookiebot manages cookie consent, and SmartSupp provides live chat functionality. The site is mobile-optimized with responsive images and viewport settings. Performance is moderate, with asynchronous loading of scripts to improve speed. The CMS is not explicitly identified, suggesting a custom or proprietary solution. Hosting details are not disclosed. The site benefits from DNSSEC and HTTPS, indicating good domain and transport security. Opportunities exist to improve accessibility and implement additional security headers.
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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