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Security report for vivantus-nieuwbouw.nl

Vivantus · Real Estate · Netherlands

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

55/100

Risk levelMedium

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

Vivantus Nieuwbouw is a specialized branch of the Vivantus Groep, focusing on providing comprehensive services for new construction real estate projects in the Netherlands. Their offerings include market research, advisory, marketing, and sales support tailored to project developers and home buyers. The company leverages a strong network of local real estate brands and partners, positioning itself as a leading player in the Dutch real estate market. Technically, the website is built on the Umbraco CMS platform, uses modern JavaScript libraries, and integrates Google Tag Manager for analytics. The site is mobile-optimized and presents a professional user experience. Security-wise, the site uses HTTPS with DNSSEC enabled and follows basic best practices, though it lacks explicit security policies and some security headers. Privacy compliance is partial, with a cookie consent banner but no visible privacy policy page. Overall, the site is trustworthy and professionally maintained, suitable for its business purpose.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

  2. 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 vivantus-nieuwbouw.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
70
DNS health
60
Network security
100
GDPR outside view
10
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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention vivantus-nieuwbouw.nl, from OffSeq Breach.

No leaked records found

Breach holds no records for vivantus-nieuwbouw.nl right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

The Vivantus Nieuwbouw website reflects a well-established real estate service provider operating under the larger Vivantus Groep umbrella. The business model centers on B2B services for project developers and B2C services for home buyers, with a strong emphasis on new construction projects. The company benefits from a broad partnership ecosystem of local real estate agencies, enhancing market reach and credibility. The site content and structure indicate a focus on lead generation, client engagement, and brand reinforcement. Growth indicators include multiple service offerings, active news updates, and a visible recruitment presence. The strategic positioning as a market leader in new construction brokerage is supported by extensive local branding and partnerships.

Security posture

The website demonstrates a moderate to good security posture. HTTPS is enforced, and DNSSEC is enabled, which protects DNS integrity. The absence of explicit security headers like Content-Security-Policy and X-Frame-Options is a minor gap. No sensitive data is exposed in the HTML content, and no vulnerable libraries are detected. However, the lack of a published security policy or incident response contact reduces transparency and preparedness perception. Privacy compliance is limited, with no visible privacy policy or terms of service pages, which could be a compliance risk under GDPR. Overall, the site is secure for typical business use but could improve transparency and policy publication.

Recommendations

  1. Publish a comprehensive privacy policy page detailing GDPR compliance and data handling practices.
  2. Add explicit security headers such as Content-Security-Policy, X-Content-Type-Options, and X-Frame-Options to enhance browser security.
  3. Create and publish a security policy and incident response contact information to improve transparency and readiness.
  4. Implement accessibility improvements to meet WCAG standards for broader user inclusivity.
  5. Enhance SEO by adding meta descriptions and Open Graph tags for better social media integration and search visibility.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Vivantus
Description
Vivantus Nieuwbouw ontzorgt projectontwikkelaars met de totale dienstverlening rondom projectontwikkelingen: van marktonderzoek en advisering tot marketing en verkoop. De organisatie bestaat uit ervaren woningmarktconsultants, nieuwbouwmakelaars, marketingspecialisten en backoffice die adviseren en ontzorgen bij iedere stap in het proces.
Key services
Marktonderzoek, Advisering, Marketing, Verkoopbegeleiding, Woningmarktconsultancy, Nieuwbouwmakelaardij
Content quality
good
Branding
consistent

Technology

Stack
Google Tag Manager, FontAwesome, Leaflet.js, Swiper.js, Umbraco CMS, JavaScript ES6+, CSS3, HTML5
Frameworks
Umbraco CMS
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • DNSSEC enabled
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

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 with clear branding and consistent messaging.
  2. Content is focused on real estate nieuwbouw services with detailed service descriptions.
  3. Contact information is clearly presented with phone, email, and physical address.
  4. Cookie consent banner is present and functional.
  5. No explicit privacy policy or terms of service pages found.
  6. No visible security policy or incident response information.
  7. Use of modern web technologies and CMS (Umbraco).
  8. No signs of malicious or suspicious content.
  9. Strong trust indicators through partner logos and parent company references.
Technical notes

Notes

The website is built on the Umbraco CMS platform, leveraging modern front-end technologies including Leaflet.js for maps, Swiper.js for sliders, and FontAwesome for icons. Google Tag Manager is used for analytics and tracking. The site loads CSS and JS asynchronously and uses responsive images for performance optimization. Hosting is provided by team.blue nl B.V., a reputable registrar and hosting provider. The site is mobile-optimized with a responsive design and uses modern HTML5 and CSS3 standards. Performance is moderate, with room for improvement in SEO and accessibility. No critical technical debt or risks were identified.
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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