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Security report for zoover.nl

Zoover · Hospitality · Netherlands

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

Security score

72/100

Risk levelMedium

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

Zoover is a well-established Dutch travel review and booking platform offering users the ability to find and book vacations with confidence, supported by millions of reviews and a lowest price guarantee. The website leverages modern web technologies including React and Next.js, and integrates advanced analytics and user interaction tracking tools such as Snowplow Analytics, Google Tag Manager, and Microsoft Clarity. The presence of industry trust signals like ANVR, Calamiteitenfonds, and SGR memberships further enhances its credibility. Security posture is solid with HTTPS enforced and asynchronous loading of tracking scripts, though explicit security headers and formal security policies are not detected. Privacy compliance is limited due to the absence of visible privacy and cookie policies. Overall, the site is professional, user-friendly, and trustworthy for its target audience.

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 SSL Key Length

      SSL certificate uses 256-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 zoover.nl

This scan found 20 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

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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
75
Security headers
20
Email security
85
DNS health
70
Network security
100
GDPR outside view
83
Average
72

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

Zoover operates in the hospitality sector, targeting Dutch-speaking travelers seeking vacation reviews and bookings. Its business model centers on providing comprehensive user-generated reviews combined with booking capabilities and last-minute deals. The platform's market position is strong in the Netherlands, supported by a large volume of reviews and recognized industry memberships. Partnerships with travel industry associations and integration of AI travel assistant services indicate a strategic approach to enhancing user experience and trust. Revenue streams likely include commissions from bookings and advertising. The company maintains consistent branding and a high level of professionalism, appealing to a broad travel audience.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and use of asynchronous script loading to minimize performance impact. However, the lack of detected security headers such as Content-Security-Policy and X-Frame-Options represents an area for improvement. No vulnerabilities or exposed sensitive data were identified in the analyzed content. The absence of a published security policy or incident response contact information limits transparency and readiness perception. Compliance with GDPR is not clearly evidenced through visible policies or consent mechanisms. Overall, security practices are adequate but could be enhanced by formalizing policies and improving header configurations.

Recommendations

  1. Publish comprehensive privacy and cookie policies prominently on the website to improve GDPR compliance and user trust.
  2. Implement and configure security headers including Content-Security-Policy, X-Frame-Options, and X-XSS-Protection to strengthen defense against common web attacks.
  3. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  4. Provide clear contact information for security incidents and data protection officer to enhance incident response readiness.
  5. Enhance accessibility features to meet compliance standards and improve user experience for all visitors.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Zoover
Description
Ervaringen, beoordelingen en aanbiedingen. Laat je inspireren en boek direct! Kies zelf je vluchttijden en heb je geboekt? We staan 24/7 voor je klaar!
Key services
Vacation reviews, Vacation bookings, Last minute deals, Travel assistance chatbot
Content quality
good
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Snowplow Analytics, Microsoft Clarity, Material UI, Zustand, Zod, Emotion CSS
Frameworks
Next.js, Material UI
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Use of security-related external scripts asynchronously

Analytics and tracking

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

Advertising

Tracking pixels
Microsoft Clarity, Snowplow Analytics
Marketing tools
Snowplow Analytics, Microsoft Clarity
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional travel review and booking platform targeting Dutch-speaking users.
  2. Strong use of modern web technologies and analytics tools.
  3. No explicit privacy, cookie, or terms of service pages detected in the provided content.
  4. Security headers and explicit security policies are missing or not detected.
  5. Multiple trusted industry memberships and trust signals are present.
  6. No contact emails or phone numbers explicitly found in the HTML content.
  7. No signs of adult or questionable content.
  8. No WAF or blocking mechanisms detected.
Technical notes

Notes

The website is built using a modern React-based framework (Next.js) with Material UI for styling, ensuring a responsive and visually appealing design. It employs advanced state management and validation libraries such as Zustand and Zod, indicating a robust front-end architecture. Hosting is supported by AWS Cloudfront CDN, contributing to moderate performance and scalability. Analytics and marketing tools are well integrated, though some optimization opportunities exist in accessibility and SEO enhancements. No CMS was explicitly detected, suggesting a custom or headless approach. Overall, the technical infrastructure supports a professional and scalable online travel platform.
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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