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Security report for cytosorbents.com

CytoSorbents Corporation · Healthcare · United States

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

84/100

Risk levelLow

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

CytoSorbents Corporation is a publicly traded medical technology company specializing in blood purification therapies designed to treat life-threatening conditions in critical care and cardiac surgery. The company operates globally with a presence in over 75 countries and offers a portfolio of solutions including CytoSorb, PuriFi, ECOS, and VetResQ. Their website targets healthcare professionals, patients, families, and investors, providing comprehensive information about their products, innovations, and corporate team. The business is well-established with a domain age consistent with its market history and NASDAQ listing. Technically, the website is built on WordPress with modern technologies such as Yoast SEO, Google Tag Manager, and Cloudflare DNS. It demonstrates excellent performance, mobile optimization, accessibility, and SEO practices. The site uses multiple tracking and marketing tools with a clear cookie consent mechanism, reflecting good privacy compliance. However, explicit security policies and incident response information are not publicly available. From a security perspective, the site enforces HTTPS, uses clientTransferProhibited domain status, and employs Cloudflare DNS, indicating a solid baseline security posture. Some improvements are recommended, including enabling DNSSEC and adding explicit security headers and a vulnerability disclosure policy. No critical vulnerabilities or suspicious patterns were detected. Overall, the website is professional, trustworthy, and compliant with privacy regulations, serving as a credible digital presence for CytoSorbents Corporation. Strategic recommendations include enhancing security transparency and incident response readiness to further strengthen trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 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

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. 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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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Keep watching cytosorbents.com

This scan found 15 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
75
Security headers
90
Email security
80
DNS health
80
Network security
100
GDPR outside view
80
Average
84

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

CytoSorbents holds a strong market position as a specialized healthcare technology provider with a focus on blood purification therapies. Their business model revolves around innovative medical devices and therapies targeting critical care sectors. The company leverages partnerships, such as with VetResQ for veterinary applications, and maintains a global distribution network. Their digital presence supports investor relations, healthcare professional education, and patient engagement, indicating a multi-segment approach. The company’s longevity and NASDAQ listing suggest stable revenue streams and growth potential. The website content and structure reflect a mature organization with clear branding and comprehensive service offerings.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and domain transfer protections in place. Use of Cloudflare DNS adds resilience against DNS attacks. The presence of cookie consent mechanisms aligns with GDPR compliance. However, the absence of a published security policy, incident response contacts, and vulnerability disclosure reduces transparency and may impact stakeholder confidence. Security headers are partially implemented but could be enhanced with CSP and other headers. No exposed sensitive data or vulnerable libraries were detected. Overall, the security posture is good but can be improved by formalizing policies and enhancing header configurations.

Recommendations

  1. Enable DNSSEC to improve DNS security and prevent spoofing.
  2. Publish a dedicated security policy page outlining security practices and compliance.
  3. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Implement comprehensive security headers including Content-Security-Policy, X-Content-Type-Options, and Referrer-Policy.
  5. Provide clear incident response contact information to improve transparency and readiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CytoSorbents Corporation
Description
CytoSorbents Corporation (NASDAQ: CTSO) is a New Jersey-based, critical care company specializing in blood purification to treat life-threatening conditions in the intensive care unit & cardiac surgery.
Key services
CytoSorb blood purification therapy, PuriFi standalone platform, ECOS organ perfusion solutions, VetResQ veterinary health emergency products
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO plugin, jQuery, Splide.js (carousel), Google Tag Manager, Google Analytics, Cloudflare DNS, WP YouTube Lyte plugin, CCM19 cookie consent manager
Frameworks
WordPress
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Use of Cloudflare DNS
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics, LinkedIn Insight
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
LinkedIn Insight Tag
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 maintained
  2. Content is comprehensive and targeted to healthcare professionals and patients
  3. Strong SEO and accessibility practices observed
  4. Use of multiple tracking and marketing tools with consent mechanism
  5. No security policy or incident response information publicly available
  6. WHOIS data supports legitimacy and long-term operation
Technical notes

Notes

The website is built on a modern WordPress platform with a well-structured theme and plugins such as Yoast SEO and WP YouTube Lyte for optimized media handling. It uses jQuery and Splide.js for interactive elements like carousels. Hosting infrastructure includes Cloudflare DNS and Kinsta CDN for media assets, contributing to fast load times and global availability. The site is mobile-optimized with responsive design and accessibility considerations. SEO is well implemented with meta tags, Open Graph, and JSON-LD structured data. No technical debt or deprecated libraries were detected. The technical setup supports a professional and performant user experience.
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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