Skip to main content

Security report for sidnlabs.nl

SIDN · Technology · Netherlands

Low risk. 2 critical or high findings in GDPR outside view and DNS health.

Security score

86/100

Risk levelLow

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

SIDN Labs is the research team of SIDN, the official registry for the .nl domain. The organization focuses on applied research to enhance the security and resilience of internet infrastructure, particularly related to the .nl domain. Their market position is strong as a key player in the Dutch internet ecosystem, providing tools, publications, and services to internet professionals, registrars, and businesses. The website reflects a mature digital presence with excellent content quality, clear navigation, and professional branding. Technically, the site uses modern technologies including Contentful CMS, Algolia search, Piwik PRO analytics, and Google Tag Manager, ensuring good performance and accessibility. Security posture is strong with HTTPS, security headers, and no visible vulnerabilities, although explicit security policies and incident response information are not published. Privacy compliance is well addressed with comprehensive privacy and cookie policies and consent mechanisms. Overall, the domain registration data aligns well with the website claims, indicating legitimacy and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
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

2 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.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  2. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain:

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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

Keep watching sidnlabs.nl

This scan found 11 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
90
Security headers
95
Email security
100
DNS health
60
Network security
100
GDPR outside view
73
Average
86

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 sidnlabs.nl, from OffSeq Breach.

No leaked records found

Breach holds no records for sidnlabs.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

SIDN Labs operates within the technology and telecommunications sectors, focusing on internet infrastructure research and domain registry services. Their business model revolves around providing research insights, tools, and services that support a secure and stable internet environment. The organization targets internet professionals, registrars, and businesses requiring domain and cybersecurity expertise. Their partnership ecosystem includes SIDN as the parent registry and various internet stakeholders. The website content and structure indicate a medium-sized organization with a professional approach to digital presence and stakeholder engagement.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, presence of key security headers, and secure handling of forms and user inputs. No exposed sensitive data or vulnerable libraries were detected. However, the absence of a publicly available security policy or incident response contact limits transparency in security governance. There is no vulnerability disclosure or security.txt file found, which could be improved to enhance trust and incident handling readiness. Privacy policies and cookie consent mechanisms are comprehensive and GDPR compliant, reflecting good data protection practices.

Recommendations

  1. Publish a dedicated security policy page outlining security frameworks and practices.
  2. Implement and publish a vulnerability disclosure policy or security.txt file.
  3. Provide explicit incident response contact channels such as security@ or abuse@ emails.
  4. Consider listing relevant security certifications to enhance trust.
  5. Maintain and regularly update privacy and cookie policies to reflect evolving regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SIDN
Description
SIDN Labs is het onderzoeksteam van SIDN. Wij doen toegepast onderzoek voor een veiligere en weerbaardere internetinfrastructuur.
Key services
Applied research for internet security, Tools and measurements for internet infrastructure, Publications and statistics on .nl domain usage, NTP service (TimeNL), Domain related services and consultancy
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Algolia search, Google Tag Manager, Piwik PRO analytics, Usercentrics CMP
Performance
fast
Mobile
excellent
Accessibility
excellent
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML
  • Secure forms with proper labels

Analytics and tracking

Services
Piwik PRO, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Piwik PRO
Marketing tools
Usercentrics CMP
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design.
  2. Strong focus on internet infrastructure research and domain registry services.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. Multiple social media channels linked and active.
  5. Use of modern analytics and consent management tools.
  6. No signs of suspicious or malicious content.
  7. Good SEO and accessibility practices implemented.
Technical notes

Notes

The website is built on a modern technology stack including Contentful CMS, Algolia for search, and Piwik PRO alongside Google Tag Manager for analytics. It uses asynchronous and deferred loading of scripts to optimize performance. The site is mobile-optimized with excellent accessibility features including color themes and skip navigation links. SEO is well implemented with meta tags, Open Graph, and JSON-LD structured data. No technical debt or outdated technologies were detected. Hosting provider details are not explicitly identified but the infrastructure appears robust and performant.
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

Reviews of this site

Share your experience with sidnlabs.nl. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review sidnlabs.nl.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.