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Security report for corewellhealth.org

Corewell Health · Healthcare · United States

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

Security score

75/100

Risk levelMedium

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

Corewell Health is a large healthcare organization serving multiple regions in Michigan, focused on providing accessible, affordable, and equitable health care and coverage. The website reflects a modern digital presence built on React and Gatsby frameworks, hosted on AWS infrastructure, with good performance and mobile optimization. Security posture is strong with HTTPS and security headers, though DNSSEC is not enabled and no explicit security policy or incident response page was found. Privacy and cookie policies are present with consent mechanisms, indicating good privacy compliance. WHOIS data shows privacy protection consistent with healthcare industry norms and domain age aligns with the organization's founding date. Overall, the website is professional, trustworthy, and well-positioned to serve its target audience.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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 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';…

  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

    • 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

  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 corewellhealth.org

This scan found 19 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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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
72
Security headers
70
Email security
70
DNS health
85
Network security
100
GDPR outside view
53
Average
75

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

Corewell Health operates in the healthcare sector with a business model combining healthcare services and insurance coverage. It targets residents in Michigan, positioning itself as a major regional provider. The organization launched recently in 2022, reflected in the domain registration date. The website content and branding are consistent and professional, supporting a strong market presence. The company leverages modern web technologies and cloud hosting, indicating a mature digital infrastructure. Social media presence and clear contact information support customer engagement and trust. No direct partnerships or subsidiaries were identified from the website content.

Security posture

The website employs HTTPS with strong SSL configuration and multiple security headers, reflecting a good security baseline. Domain registration includes clientDeleteProhibited and clientTransferProhibited statuses, enhancing domain security. However, DNSSEC is not enabled, which could be improved. No exposed sensitive data or vulnerable libraries were detected in the content. The absence of a published security policy or incident response contact limits transparency in security governance. No vulnerability disclosure or security.txt file was found, which could enhance security communication. Overall, the security posture is solid but could benefit from additional transparency and DNS security enhancements.

Recommendations

  1. Enable DNSSEC to improve DNS security and prevent spoofing.
  2. Publish a dedicated security policy and incident response page to increase transparency.
  3. Implement a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  4. Regularly audit third-party libraries and dependencies to ensure no vulnerabilities.
  5. Enhance privacy compliance disclosures with detailed data retention and processing information.

Contact details published on the site

Addresses
Legal name
Corewell Health
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Corewell Health
Description
Corewell Health is a healthcare organization relentlessly pursuing better health for everyone, serving Southeast, Southwest, and West Michigan with accessible, affordable, equitable, and simple health care and coverage.
Key services
Healthcare services, Health coverage, Patient care
Content quality
excellent
Branding
consistent

Technology

Stack
React, Gatsby, AWS DNS
Frameworks
React, Gatsby
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientDeleteProhibited domain status
  • ClientTransferProhibited domain status
  • ClientUpdateProhibited domain status

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
basic

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. Content is comprehensive and relevant to healthcare services.
  3. No signs of malicious or suspicious content.
  4. Good use of modern web technologies and frameworks.
  5. Privacy and cookie policies are present with consent mechanisms.
  6. No explicit security policy or incident response page found.
  7. WHOIS data shows privacy protection but is consistent with business type.
Technical notes

Notes

The website is built using modern JavaScript frameworks React and Gatsby, indicating a static site generation approach for performance and SEO benefits. Hosting on AWS with Amazon Registrar domain registration suggests reliable infrastructure. The site uses Contentstack as a CMS, supporting scalable content management. Performance is fast with responsive design and accessibility features implemented. SEO is supported by comprehensive meta tags and Open Graph data. No major technical debt or deprecated technologies were detected. Opportunities exist to enable DNSSEC and improve security policy documentation.
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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