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Security report for zolldata.com

ZOLL Medical Corporation · Healthcare · United States

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

70/100

Risk levelMedium

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

ZOLL Data Systems is a well-established provider of software and data solutions tailored for EMS, fire, and healthcare financial organizations. The company leverages decades of innovation, dating back to its founder's pioneering work in 1956, to deliver cloud-based solutions that enhance clinical, operational, and financial performance. Their market position is strong, supported by a comprehensive product suite and a clear focus on interoperability and revenue cycle management. The website reflects a mature digital presence with professional design, clear navigation, and extensive content targeting EMS and healthcare sectors. Technically, the website is built on the HubSpot CMS platform, integrating modern technologies such as Wistia for video, Google Analytics, and various marketing and tracking tools. The site is mobile-optimized, accessible, and SEO-friendly, indicating a high level of digital maturity. Security posture is solid with HTTPS enforced and secure cookie consent mechanisms, though explicit security headers and dedicated security policies could be improved. The absence of WHOIS registration data for the domain is a notable concern, creating uncertainty about domain legitimacy and ownership. Despite this, the professional presentation, detailed business information, and presence of verified social media channels mitigate some risk. Overall, the site scores well on content quality, technical implementation, and business credibility but should address WHOIS transparency and enhance security disclosures. Strategic recommendations include verifying domain registration details, publishing clear security and incident response policies, and implementing a vulnerability disclosure program to strengthen trust and compliance.

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

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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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
    • 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

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

Keep watching zolldata.com

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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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
47
Security headers
50
Email security
70
DNS health
80
Network security
100
GDPR outside view
73
Average
70

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

ZOLL Data Systems operates in the healthcare technology sector, focusing on EMS, fire, and healthcare financial markets. Their competitive advantage lies in deep industry expertise, a legacy of innovation, and a comprehensive cloud-based software suite that addresses operational and financial challenges. Revenue streams likely include software licensing, consulting services, and data analytics solutions. The target customers are EMS providers, fire departments, and healthcare financial organizations seeking to improve efficiency and revenue capture. The company maintains a robust partnership ecosystem, including regional partners and event platforms, enhancing market reach and customer engagement. Growth indicators include active event participation and continuous product innovation. The website's professional content and testimonials reflect a mature and trusted market presence.

Security posture

The website demonstrates a good security maturity level with HTTPS enforced and use of cookie consent mechanisms aligned with privacy regulations. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of explicit security headers like X-Frame-Options and a dedicated security policy page indicates room for improvement. There is no visible incident response or vulnerability disclosure information, which are important for transparency and trust. Compliance with GDPR is implied through privacy policy and cookie consent but could be more explicitly documented. Overall, the security posture is solid but would benefit from enhanced transparency and formalized security documentation.

Recommendations

  1. Verify and publish accurate WHOIS domain registration information to improve legitimacy and trust.
  2. Implement and publicly disclose a comprehensive security policy and incident response plan.
  3. Add a vulnerability disclosure or security.txt file to facilitate responsible reporting of security issues.
  4. Enhance security headers such as X-Frame-Options and X-Content-Type-Options to strengthen protection.
  5. Increase transparency on data retention policies and privacy compliance to align with GDPR and other regulations.

Contact details published on the site

Addresses
Legal name
ZOLL Medical Corporation
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ZOLL Medical Corporation
Description
ZOLL Data Systems provides software and data solutions for the EMS, fire, and healthcare to help improve clinical, operational, and financial performance.
Key services
EMS & Fire software solutions, Healthcare financial and data solutions, Consulting services, Revenue cycle management tools
Content quality
excellent
Branding
consistent

Technology

Stack
HubSpot CMS, Wistia video embedding, Google Analytics, Google Tag Manager, LinkedIn Insight Tag, Facebook Pixel, Typekit Fonts, Splide.js carousel
Frameworks
HubSpot CMS framework
Platforms
HubSpot
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of secure cookies consent mechanism
  • No exposed sensitive data in HTML
  • Secure forms with validation

Analytics and tracking

Services
Google Analytics, HubSpot Analytics, LinkedIn Insight Tag, Facebook Pixel
Tracking level
extensive
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel, LinkedIn Insight Tag
Marketing tools
Clearbit, HubSpot Analytics
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 multimedia
  2. No WAF or blocking mechanisms detected
  3. Professional healthcare and EMS software provider
  4. Strong use of marketing and analytics tools
  5. No exposed security vulnerabilities detected in HTML
  6. WHOIS data missing, which is unusual and warrants caution
Technical notes

Notes

The website is built on the HubSpot CMS platform, utilizing modern web technologies including Wistia for video hosting, Splide.js for carousels, and multiple analytics and marketing tools such as Google Analytics, Google Tag Manager, Facebook Pixel, and LinkedIn Insight Tag. The site is well-structured with valid HTML and CSS, optimized for mobile devices, and includes accessibility features. Performance is moderate, with some reliance on third-party scripts which should be regularly audited for security. The technical infrastructure supports a professional and scalable digital presence but could benefit from enhanced security header implementation and clearer hosting provider identification.
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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