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Security report for sabinevankollenburg.nl

Sabine van Kollenburg · Other · Netherlands

High risk. 10 critical or high findings in GDPR outside view, SSL/TLS and 2 other checks.

Security score

26/100

Risk levelHigh

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

The website sabinevankollenburg.nl serves as a personal portfolio for the artist Sabine van Kollenburg, showcasing her artistic philosophy and work through a simple, static HTML site. The business focus is on art creation and illustration, targeting art enthusiasts and collectors. The site is modest in scale and scope, reflecting a small individual artist operation with a long domain history dating back to 2004. Technically, the website employs basic HTML, CSS, and JavaScript without any modern CMS or frameworks. The site lacks HTTPS, security headers, and mobile optimization, indicating a low level of digital maturity. Navigation is straightforward but limited, and no analytics or tracking technologies are present. From a security perspective, the absence of HTTPS is a critical vulnerability, exposing visitors to potential interception risks. No privacy or cookie policies are present, which is a compliance gap under GDPR. The site does not collect user data via forms or tracking, reducing some risk but also limiting engagement capabilities. Overall, the website presents a low-risk profile due to minimal data collection but requires urgent improvements in security and privacy compliance to enhance trust and protect visitors. Strategic recommendations include implementing HTTPS, adding privacy and cookie policies, improving mobile responsiveness, and enhancing security headers.

Scanned

NIS2 and GDPR posture

GDPR outside view
0/ 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

10 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

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  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"

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

Keep watching sabinevankollenburg.nl

This scan found 27 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.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

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
0
Security headers
15
Email security
55
DNS health
65
Network security
20
GDPR outside view
0
Average
26

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

Sabine van Kollenburg operates as an individual artist with a niche market position focused on art and illustration. The business model is primarily promotional, aiming to showcase artwork to potential buyers or galleries. The domain age supports a stable online presence, but the lack of contact details and business information limits commercial engagement. There are no detected partnerships or subsidiaries. The website's simplicity suggests limited revenue streams, likely relying on direct sales or commissions. Growth potential could be enhanced by adding e-commerce capabilities or social media integration.

Security posture

The current security posture is weak due to the lack of HTTPS and absence of security headers. No forms or user input mechanisms reduce attack surface but also limit functionality. There is no evidence of incident response policies or security certifications. GDPR compliance is lacking due to missing privacy and cookie policies. The site does not employ analytics or tracking, minimizing privacy risks but also reducing business intelligence. Overall, the site is vulnerable to interception and lacks modern security best practices.

Recommendations

  1. Implement HTTPS with a valid SSL/TLS certificate to secure all communications.
  2. Add comprehensive privacy and cookie policies to comply with GDPR requirements.
  3. Improve mobile responsiveness and accessibility to enhance user experience.
  4. Introduce security headers such as Content-Security-Policy and X-Frame-Options.
  5. Consider adding contact information and incident response details to build trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sabine van Kollenburg
Description
Artist specializing in paintings that explore the relationship between objects and their environment, creating stories beyond the canvas.
Key services
Art creation, Illustration
Content quality
basic
Branding
moderate

Technology

Stack
HTML, CSS, JavaScript
Performance
moderate
Mobile
poor
Accessibility
poor
SEO
poor

Security

Observed score
30/100

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is a personal artist portfolio with minimal content.
  2. No privacy, cookie, or terms of service policies found.
  3. No contact emails, phone numbers, or social media links detected.
  4. No forms present on the page.
  5. Site is served over HTTP without HTTPS, which is a critical security issue.
  6. No security headers or advanced security practices observed.
  7. Mobile optimization and accessibility are poor.
  8. No analytics or tracking scripts detected.
  9. Navigation is simple and clear but limited to a few internal pages.
  10. No advertising or marketing tools detected.
Technical notes

Notes

The website is built using static HTML, CSS, and JavaScript without any CMS or modern frameworks. The hosting is provided by Internet Service Europe B.V., consistent with the WHOIS data. Performance is moderate but could be improved with modern optimization techniques. The site lacks mobile optimization and accessibility features, limiting reach and usability. SEO is minimal with no meta description or Open Graph tags. There is no evidence of analytics or marketing tools. The technical debt is low but modernization opportunities exist to improve security, performance, and compliance.
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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