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Security report for mckesson.com

McKesson Corporation · Healthcare · United States

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

85/100

Risk levelLow

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

McKesson Corporation operates as a leading healthcare company specializing in wholesale distribution of medical supplies, pharmaceuticals, and healthcare technology solutions. The company holds a strong market position as a major distributor and technology provider to healthcare providers and pharmaceutical companies. The website reflects a mature enterprise with comprehensive service offerings and a clear focus on healthcare industry stakeholders. Technically, the website employs modern JavaScript libraries, analytics tools, and is hosted on Microsoft Azure, indicating a robust digital infrastructure. The site is well optimized for SEO, mobile devices, and accessibility, providing an excellent user experience. Security posture is strong with HTTPS enforcement, security headers, and cookie consent mechanisms, although explicit security policies and vulnerability disclosures are not publicly available. WHOIS data is not accessible, likely due to privacy protection, which slightly reduces transparency but is common for large enterprises. Overall, the website is professional, trustworthy, and compliant with privacy regulations, supporting McKesson's reputation as a healthcare industry leader.

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

2 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. 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 mckesson.com

This scan found 14 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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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
82
Security headers
75
Email security
80
DNS health
85
Network security
100
GDPR outside view
88
Average
85

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 mckesson.com, from OffSeq Breach.

Total records
19,212
Employees
208
Customers
4,202
Third parties
14,802
Weak passwords
3%

Latest record dated 2026-06-13 · 231 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for mckesson.com.

Select it in the checkout above.

Masked preview

  • –fedsvc.mckesson.com2026-06-13
  • –fedsvc.mckesson.com2026-06-13
  • –fedsvc.mckesson.com2026-06-13
  • –fedsvc.mckesson.com2026-06-13
  • –fedsvc.mckesson.com2026-06-10

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)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

McKesson's business model centers on healthcare wholesale distribution and technology solutions, targeting healthcare providers, health systems, and pharmaceutical companies. The company leverages partnerships and subsidiaries (e.g., proddev.mckesson.com) to support its operations. Market positioning is strong with ISO certifications and a broad service portfolio. The website content and structure indicate a focus on enterprise clients and compliance with regulatory standards. The presence of comprehensive privacy and cookie policies, along with analytics and tracking tools, suggests a mature marketing and compliance strategy. The company maintains active social media channels to engage stakeholders and enhance brand visibility.

Security posture

The website demonstrates a high security maturity level with enforced HTTPS, multiple security headers (CSP, HSTS, X-Frame-Options), and a cookie consent mechanism compliant with GDPR. No vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of a public security policy, incident response information, or vulnerability disclosure program limits transparency. The WHOIS data is privacy protected, which is typical but reduces domain registration transparency. Overall, the security posture is strong but could be improved by publishing explicit security and incident response documentation.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency.
  2. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Enhance data retention policy disclosures to align with privacy best practices.
  4. Maintain and regularly update privacy and cookie policies to ensure ongoing GDPR compliance.
  5. Consider publishing WHOIS data or providing verified domain registration information to increase trust.

Contact details published on the site

Addresses
Legal name
McKesson Corporation
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
McKesson Corporation
Description
The leading healthcare company for wholesale medical supplies & equipment, pharmaceutical distribution, and healthcare technology solutions.
Key services
Medical supplies distribution, Pharmaceutical distribution, Healthcare technology solutions
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 3.7.1, GSAP (GreenSock Animation Platform), Vidyard video player, Swiper.js, Google Tag Manager, Microsoft Application Insights
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of Content Security Policy
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager, Microsoft Application Insights
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Microsoft Application Insights
Marketing tools
Vidyard video 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 interactive features.
  2. Strong privacy and cookie compliance with OneTrust implementation.
  3. Use of modern JavaScript libraries and analytics tools.
  4. No signs of malware or phishing.
  5. WHOIS data is unavailable or privacy protected, which is common but reduces transparency.
  6. No explicit security.txt or vulnerability disclosure found.
  7. Contact information is available and includes multiple channels.
  8. Website is well optimized for SEO and mobile devices.
Technical notes

Notes

The website uses a modern technology stack including jQuery, GSAP, Swiper.js, and Vidyard for video content, supported by Google Tag Manager and Microsoft Application Insights for analytics and monitoring. The CMS appears to be Sitecore, a robust enterprise content management system. Hosting on Microsoft Azure provides scalability and reliability. Performance is moderate with good mobile optimization and accessibility features. The site includes comprehensive meta tags and Open Graph data for SEO and social sharing. Technical risks are minimal, with no outdated or vulnerable libraries detected. Opportunities exist to improve technical documentation and security transparency.
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

Earlier scans of this domain

  1. 67/100Medium19 findingsView report
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