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Security report for cslbehring.nl

CSL Behring Nederland · Healthcare · Netherlands

Medium risk. 4 critical or high findings in Email security, Security headers and 1 other check.

Security score

68/100

Risk levelMedium

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

CSL Behring Nederland operates as a leading biotechnology company specializing in therapies for rare and serious diseases. The website reflects a strong market position with a focus on patient-centric services, research and development, and a broad product portfolio. The company targets patients, healthcare professionals, and partners within the healthcare sector, operating under the parent company CSL Limited. The digital presence is professional, well-branded, and compliant with GDPR regulations, featuring comprehensive privacy and cookie policies with active consent mechanisms. Technically, the website employs modern technologies such as Google Tag Manager for analytics, OneTrust for cookie consent management, and Brightcove for video content. The site is mobile-optimized, accessible, and SEO-friendly, with good performance metrics. Security best practices are observed, including HTTPS enforcement and security headers, though explicit security policies and incident response information are not publicly disclosed. The security posture is solid with no detected vulnerabilities or exposed sensitive data. However, the absence of a vulnerability disclosure policy or security.txt file and lack of direct security contact channels represent areas for improvement. Overall, the website is trustworthy, safe, and professionally maintained, with a high legitimacy score based on domain registration consistency and business alignment. Strategic recommendations include publishing detailed security policies, establishing vulnerability disclosure mechanisms, and enhancing transparency around certifications and compliance to further strengthen trust and security culture.

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. 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

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

  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 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';…

  3. 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 cslbehring.nl

This scan found 23 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

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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
67
Security headers
50
Email security
40
DNS health
60
Network security
100
GDPR outside view
88
Average
68

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 cslbehring.nl, from OffSeq Breach.

No leaked records found

Breach holds no records for cslbehring.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

CSL Behring Nederland is positioned as a global leader in biotechnology focused on rare diseases, leveraging a business model centered on biopharmaceutical manufacturing and distribution. The company benefits from a strong parent company, CSL Limited, and maintains a clear target audience of patients and healthcare professionals. The website content and structure indicate a mature digital presence with a comprehensive product portfolio and patient support services. The absence of direct contact emails or phone numbers suggests a controlled communication channel via contact forms, aligning with privacy and compliance standards. The company demonstrates a commitment to GDPR compliance and user privacy, supported by robust cookie consent mechanisms. The partnership ecosystem includes links to the parent company and privacy domains, reinforcing corporate legitimacy.

Security posture

The website exhibits a mature security posture with HTTPS enforced and multiple security headers implemented, indicating adherence to best practices. The use of OneTrust for cookie consent and Google Tag Manager for analytics is managed with privacy compliance in mind. No vulnerabilities or exposed sensitive data were detected in the HTML content. However, the lack of a published security policy, incident response plan, or vulnerability disclosure mechanism limits transparency and may impact incident readiness. The absence of direct security contact channels such as security@ or abuse@ emails is a gap in incident response communication. Overall, the security maturity is good but could be enhanced by formalizing and publishing security governance documents and contact points.

Recommendations

  1. Publish a comprehensive security policy and incident response plan on the website.
  2. Implement and publicize a vulnerability disclosure policy or security.txt file.
  3. Provide direct security contact channels (e.g., security@domain) for incident reporting.
  4. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  5. Enhance transparency by listing certifications and compliance attestations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CSL Behring Nederland
Description
CSL Behring is a global biotechnology leader specializing in therapies for rare and serious diseases including bleeding disorders, immune deficiencies, hereditary angioedema, neurological disorders, and Alpha-1 Antitrypsin Deficiency.
Key services
development and supply of plasma-derived and recombinant therapies, research and development in rare diseases, patient support and educational materials
Content quality
excellent
Branding
consistent

Technology

Stack
Google Tag Manager, OneTrust Cookie Consent, Brightcove video player, CSS Plyr
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of security headers

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
OneTrust Cookie Consent
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Clear focus on healthcare and rare diseases.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. No direct company emails or phone numbers found in the visible content; contact is via contact form.
  5. Use of modern tracking and consent technologies.
  6. No security policy or incident response information publicly available.
  7. No vulnerability disclosure or security.txt found.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern technology stack including Google Tag Manager for analytics, OneTrust for cookie consent management, and Brightcove for video delivery. The site is well-structured with valid HTML and CSS, optimized for mobile devices, and includes accessibility features. Performance is moderate, with room for optimization. No CMS or hosting provider was explicitly detected. The site employs canonical URLs and meta tags for SEO. The use of external domains is limited to trusted partners and service providers. Overall, the technical infrastructure supports a professional and compliant digital presence with opportunities for further modernization and performance tuning.
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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