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Security report for hotelsterren.nl

Hotelsterren · Hospitality · Netherlands

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

69/100

Risk levelMedium

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

Hotelsterren is a specialized service provider focused on the official classification of hotels in the Netherlands according to European standards. The company offers a web application called 'Klasse' to assist hotels in managing their classification process and compliance with 270 European norms. With over 1,200 hotels classified, Hotelsterren holds a strong market position as a trusted authority in the hospitality sector. The website is professionally designed, mobile-optimized, and provides clear navigation and comprehensive content relevant to its target audience of hotel owners and travelers. Technically, the website is built on WordPress with modern technologies including Bootstrap, React, and jQuery. It leverages Cloudflare for security and performance, Google Analytics and Facebook Pixel for tracking, and includes a cookie consent mechanism compliant with GDPR. Security posture is strong with HTTPS enforced and bot mitigation via Cloudflare Turnstile and Google reCAPTCHA, though some security headers could be explicitly added for enhanced protection. Overall, the website demonstrates good privacy compliance, business credibility, and technical maturity. No critical vulnerabilities or suspicious content were detected. The domain registration details align well with the business claims, supporting legitimacy and trustworthiness. Strategic improvements could focus on publishing formal security policies and enhancing accessibility features.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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 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';…

  2. 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 hotelsterren.nl

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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Full report

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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
15
Email security
85
DNS health
70
Network security
100
GDPR outside view
83
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

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Hotelsterren operates in the hospitality sector, providing official hotel classification services based on European standards. Its business model revolves around certification and quality assurance for hotels, supported by a digital platform for classification management. The company targets hotel owners seeking official star ratings and travelers looking for verified hotel quality. The presence of partnerships with Hotelstars Union and KHN indicates a strong industry network. The company appears to be small-sized, founded around 2017, with clear legal and tax registrations. The website content and testimonials suggest a reputable market presence with growth potential in the Dutch hospitality market.

Security posture

The website exhibits a mature security posture with HTTPS enforced and use of Cloudflare for DDoS protection and bot mitigation. Integration of Google reCAPTCHA and Cloudflare Turnstile enhances form security. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, explicit security headers like X-Frame-Options and X-Content-Type-Options are not visibly set and should be added. There is no published security policy or incident response contact, which are recommended for transparency and readiness. Overall, the site is secure but could improve formal security documentation and header configurations.

Recommendations

  1. Add explicit security headers such as X-Frame-Options and X-Content-Type-Options to enhance protection against clickjacking and MIME sniffing.
  2. Publish a formal security policy and incident response contact information to improve transparency and preparedness.
  3. Implement a security.txt file to facilitate vulnerability disclosure and communication with security researchers.
  4. Conduct regular audits of third-party scripts and plugins to ensure no vulnerabilities are introduced.
  5. Enhance website accessibility to meet higher standards for users with disabilities.

Contact details published on the site

Addresses
Legal name
Hotelsterren
Registration number
55166679
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Hotelsterren
Description
Hotelsterren toetst de hotels in Nederland op faciliteiten en services volgens de Europese Hotel Classificatie. Hotel boeken? Ga eerst naar Hotelsterren.
Key services
Hotel classification according to European standards, Providing official star ratings, Web application 'Klasse' for managing classification and participation, Information and criteria publication
Content quality
good
Branding
consistent

Technology

Stack
WordPress 6.8.2, Bootstrap, jQuery 3.6.0, Owl Carousel, Select2, React (for search widget), Google Tag Manager, Google Analytics, Facebook Pixel, Cloudflare Turnstile Captcha
Frameworks
WordPress
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Cloudflare for DDoS and bot protection
  • Google reCAPTCHA and Cloudflare Turnstile for bot mitigation
  • No exposed sensitive data in HTML
  • Secure forms with CAPTCHA

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Facebook Pixel
Transparency
good

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. Clear focus on hotel classification services in the Netherlands.
  3. Use of modern web technologies and analytics.
  4. Good privacy and cookie compliance with explicit consent mechanism.
  5. No critical security issues detected.
  6. Contact information is complete and clearly presented.
  7. No suspicious or malicious content found.
Technical notes

Notes

The website is built on a modern WordPress platform using version 6.8.2, combined with Bootstrap for responsive design and jQuery for DOM manipulation. React is used for the search widget, indicating some modern JavaScript usage. The site uses Google Fonts and several CSS stylesheets for consistent branding. Performance is moderate, with asynchronous loading of analytics and tag manager scripts. Hosting is behind Cloudflare, providing CDN and security benefits. The site includes a cookie consent banner managed by CookieScript, ensuring compliance with EU regulations. Overall, the technical stack is solid with room for performance optimization and enhanced accessibility.
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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