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Security report for taxatiemoduleonline.nl

Other · Netherlands

Medium risk. 9 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

55/100

Risk levelMedium

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

The website taxatiemoduleonline.nl/admin/login serves as a secure login portal for an administrative module related to property or asset valuation services. Access is restricted exclusively to users with a PowerKraut Google Account, indicating a controlled and limited user base, likely internal staff or authorized partners. The site employs Tailwind CSS for styling and presents a minimalistic, functional design focused on authentication rather than marketing or public information. The domain is registered with a Dutch registrar and has been active since late 2020, consistent with a small or medium-sized enterprise operating in the Netherlands. From a technical perspective, the site uses modern CSS frameworks but lacks visible SEO metadata, structured data, or comprehensive accessibility features. There is no evidence of analytics or tracking scripts, which aligns with the site's restricted access nature. Security posture is moderate; while login is restricted to Google authentication, no security headers or explicit HTTPS enforcement details were found in the provided data. Privacy and cookie policies are absent, which is a compliance gap. Overall, the security posture is basic but functional for an internal admin portal. The lack of public-facing business information, contact details, and compliance documentation limits the site's transparency and trust signals. The domain registration data is consistent and legitimate, with no suspicious patterns detected. Strategic improvements should focus on adding security headers, privacy and cookie policies, and incident response information to enhance compliance and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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

9 findings rated critical or high. Fix these first.

  1. GDPR outside view

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

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  3. 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';…

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

Keep watching taxatiemoduleonline.nl

This scan found 28 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
72
Security headers
15
Email security
60
DNS health
60
Network security
100
GDPR outside view
25
Average
55

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 business appears to operate a specialized online valuation module, likely targeting real estate or asset appraisal professionals. The login restriction to PowerKraut Google Accounts suggests a partnership or internal tool rather than a public-facing service. The business model is likely B2B SaaS or internal enterprise software. Market positioning is not explicitly stated but appears niche and controlled. There are no visible revenue streams or marketing efforts on this page. The company is relatively young, founded around 2020, and operates in the Netherlands. No partnerships or subsidiaries are indicated on this page.

Security posture

The security maturity level is basic with reliance on Google authentication for access control. No advanced security headers or policies are visible, and no vulnerability disclosure or incident response information is provided. The absence of privacy and cookie policies indicates compliance gaps with GDPR and related regulations. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The site would benefit from implementing standard security headers (CSP, HSTS, X-Frame-Options), publishing privacy and cookie policies, and establishing a vulnerability disclosure process to improve security culture and readiness.

Recommendations

  1. Implement and enforce HTTPS with HSTS to ensure secure communications.
  2. Add security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish comprehensive privacy and cookie policies to comply with GDPR and inform users.
  4. Establish a vulnerability disclosure policy and incident response contact channels.
  5. Include contact information or support channels to improve trust and user assistance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
The website is an admin login portal for TaxatieModuleOnline, indicating a service related to property or asset valuation. It restricts login to users with a PowerKraut Google Account, suggesting a controlled user base likely internal or partner-related.
Key services
Online property or asset valuation module, Secure admin access via Google account authentication
Content quality
basic
Branding
consistent

Technology

Stack
Tailwind CSS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
poor

Security

Observed score
40/100
Good practices seen
  • Login restricted to Google account authentication

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

Design
basic
User experience
basic
Content relevance
basic
Navigation
basic
Professionalism
basic
Trustworthiness
moderate

Key observations

  1. Website is an admin login page with restricted access.
  2. No privacy, cookie, or terms of service policies found on the page.
  3. No contact information or business details provided on this page.
  4. Uses Tailwind CSS for styling.
  5. Login is only possible via a specific Google account domain (PowerKraut).
  6. No analytics or tracking scripts detected.
  7. No security headers visible in provided data.
  8. No external marketing or advertising domains detected except CDN for Tailwind CSS.
Technical notes

Notes

The website uses Tailwind CSS loaded from a CDN, indicating a modern styling approach. The HTML is well-structured but minimal, focusing solely on login functionality. There is no evidence of a CMS or backend platform from the HTML content. Performance is likely moderate given the minimal content and CDN usage. Mobile optimization appears good due to responsive Tailwind CSS classes. SEO optimization is poor due to lack of meta tags and structured data. Accessibility is basic with no ARIA roles or landmarks detected. The site is hosted under a Dutch registrar, RootNet NOC B.V., but hosting provider details are not explicit.
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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