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Security report for synvest.nl

SynVest · Real Estate · Netherlands

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

Security score

73/100

Risk levelMedium

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

SynVest is a Dutch company specializing in real estate investment and real estate funds, targeting investors seeking higher returns in the property sector. The website presents a professional and consistent brand image with clear messaging focused on investment services and customer engagement through brochure requests and direct client onboarding. The domain is well-established since 2005, reinforcing business credibility. Technically, the website employs modern marketing and analytics technologies including Google Tag Manager, HubSpot, Hotjar, and Cookiebot for GDPR-compliant cookie consent management. The site is secured with HTTPS and DNSSEC, indicating a strong baseline security posture. However, there is room for improvement in implementing additional security headers and publishing explicit security policies. Security-wise, the site demonstrates good practices such as anti-CSRF cookies and comprehensive cookie consent mechanisms. No critical vulnerabilities or exposed sensitive data were detected. The absence of a terms of service page and incident response contact information suggests areas for legal and security policy enhancement. Overall, SynVest's website is a well-maintained, secure, and privacy-conscious platform suitable for its target audience. Strategic improvements in security headers, legal disclosures, and accessibility would further strengthen its trust and compliance posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 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 synvest.nl

This scan found 21 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

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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
82
Security headers
15
Email security
80
DNS health
70
Network security
100
GDPR outside view
88
Average
73

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

SynVest operates in the real estate investment sector within the Netherlands, focusing on retail and institutional investors interested in property funds. The company leverages digital marketing tools and analytics to optimize user engagement and advertising effectiveness. Its business model centers on providing investment opportunities and related informational materials. The long domain age and consistent WHOIS data support a stable market presence. The company appears to maintain partnerships with major marketing platforms but does not publicly disclose subsidiaries or parent companies. Growth indicators include active use of marketing automation and analytics tools, suggesting a data-driven approach to customer acquisition and retention.

Security posture

The website exhibits a mature security posture with HTTPS enforced and DNSSEC enabled, reducing risks of interception and DNS spoofing. Cookie consent is granular and GDPR compliant, reflecting good privacy practices. The use of anti-CSRF cookies indicates awareness of common web vulnerabilities. However, the lack of explicit security headers such as Content-Security-Policy and absence of published security or incident response policies represent gaps. No vulnerabilities or exposed sensitive data were found in the analyzed content. The site would benefit from formalizing security policies and incident response contacts to enhance transparency and readiness.

Recommendations

  1. Implement and publish security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web attacks.
  2. Create and publish a terms of service page to clarify legal terms and user obligations.
  3. Add a dedicated security policy and incident response contact information (e.g., security@ or abuse@ email) to improve trust and compliance.
  4. Enhance website accessibility features to meet WCAG standards and improve user experience for all visitors.
  5. Regularly audit and update third-party scripts and marketing tools to minimize security risks and ensure privacy compliance.

Contact details published on the site

Registration number
32106705 020
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SynVest
Description
SynVest is gespecialiseerd in beleggen in vastgoed en vastgoedfondsen. Op zoek naar meer rendement? Vraag een brochure aan of wordt direct klant.
Key services
Real estate investment, Real estate funds, Customer onboarding, Brochure requests
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, HubSpot, Hotjar, Cookiebot, YouTube iframe API
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • DNSSEC enabled
  • Cookie consent with granular controls
  • Anti-CSRF cookies (.AspNetCore.Antiforgery.#)

Analytics and tracking

Services
Google Analytics, Hotjar, HubSpot
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Meta Platforms, Inc., Google, Microsoft
Tracking pixels
HubSpot, Hotjar, Facebook Pixel, LinkedIn Insight Tag, YouTube
Marketing tools
HubSpot, Cookiebot
Transparency
good

Site quality

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

Key observations

  1. Website uses multiple third-party marketing and analytics services with explicit cookie consent.
  2. No explicit contact emails or phone numbers found on the homepage or in the provided HTML snippet.
  3. No terms of service page detected in the provided content.
  4. Cookie consent mechanism is comprehensive and GDPR compliant.
  5. Website is in Dutch language targeting Dutch real estate investors.
  6. No security.txt or vulnerability disclosure policy found.
  7. No explicit security or incident response policies published.
  8. Website uses HTTPS and DNSSEC, indicating good security baseline.
Technical notes

Notes

The website uses a modern JavaScript-based front-end with integrations to HubSpot, Hotjar, Google Tag Manager, and Cookiebot for marketing, analytics, and consent management. The presence of YouTube iframe API indicates embedded video content. The site loads multiple external scripts asynchronously, which helps performance. The CSS includes custom fonts and responsive design elements, supporting good mobile optimization. No CMS or hosting provider was explicitly detected from the provided data. Performance is moderate with room for optimization. Accessibility is basic but could be improved with ARIA roles and keyboard navigation enhancements. SEO is supported by proper meta tags and Open Graph data for social sharing.
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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