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Security report for mellon.org

Mellon Foundation · Non-profit · United States

Low risk. 3 critical or high findings in Security headers and GDPR outside view.

Security score

81/100

Risk levelLow

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

The Mellon Foundation is a well-established non-profit organization focused on grantmaking to support arts and humanities communities. Their website reflects a professional and content-rich platform that clearly communicates their mission and grant programs. The site targets non-profit organizations and individuals engaged in cultural and educational initiatives. Technically, the website leverages modern frameworks such as Next.js and React, integrates with Contentful CMS, and uses standard analytics and tracking tools like Google Tag Manager and Facebook Pixel. The site is mobile-optimized and accessible, with good SEO practices in place. Security-wise, the site enforces HTTPS, includes key security headers, and does not expose sensitive data. However, it lacks visible cookie consent mechanisms and explicit security or incident response contact information, which are areas for improvement. WHOIS data is unavailable due to privacy protection or query failure, but the overall trustworthiness remains high given the professional presentation and alignment with a known foundation.

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

3 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

    • 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

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

Keep watching mellon.org

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
100
Security headers
70
Email security
85
DNS health
80
Network security
100
GDPR outside view
53
Average
81

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

Mellon Foundation operates as a grantmaking entity in the non-profit sector, focusing on arts and humanities. Their business model centers on funding community projects and cultural initiatives. The foundation maintains a strong market position as a reputable philanthropic organization with a large operational scale. Their target audience includes non-profit organizations, cultural institutions, and grant applicants. The website content and design indicate a mature digital presence with consistent branding and clear communication of services. The foundation's partnership ecosystem includes media outlets and cultural organizations, as evidenced by external links to philanthropy and arts news sites. Growth indicators include active grant stories and community engagement features. The absence of direct contact details on the homepage suggests a controlled communication approach typical for large foundations.

Security posture

The Mellon Foundation website demonstrates a solid security posture with HTTPS enforced and multiple security headers implemented, including Strict-Transport-Security and Content-Security-Policy. No vulnerabilities or exposed sensitive information were detected in the HTML content. However, the lack of a published security policy, incident response plan, or dedicated security contact reduces transparency and may impact incident handling readiness. The absence of a vulnerability disclosure program or security.txt file limits avenues for responsible vulnerability reporting. Privacy compliance is supported by a comprehensive privacy policy, but the missing cookie consent mechanism could be a compliance gap under GDPR and similar regulations. Overall, the security maturity is good but could be enhanced by adding explicit security governance documentation and user-facing security features.

Recommendations

  1. Implement a visible cookie consent banner to ensure compliance with privacy regulations such as GDPR.
  2. Publish a dedicated security policy and incident response plan accessible to users and partners.
  3. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting of security issues.
  4. Provide clear contact information for security incidents or abuse reports to improve transparency and trust.
  5. Consider adding a terms of service page to clarify user rights and obligations when interacting with the website.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mellon Foundation
Description
The Mellon Foundation makes grants to actively unlock the power in the arts and humanities that helps connect us all.
Key services
Grantmaking, Community support through arts and humanities
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Facebook Pixel, Contentful CMS
Frameworks
Next.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Facebook Pixel
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 content-rich
  2. No WHOIS data available due to query failure or privacy protection
  3. No direct contact emails or phone numbers found on the homepage
  4. Privacy policy is present and comprehensive
  5. No cookie consent banner detected
  6. Uses modern web technologies and tracking scripts
  7. No visible security or incident response contact information
  8. No terms of service page detected
  9. No vulnerability disclosure or security.txt found
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, indicating a contemporary and scalable infrastructure. Content is managed via Contentful CMS, a cloud-based headless CMS, which supports efficient content delivery and updates. The site integrates analytics and marketing tools such as Google Tag Manager and Facebook Pixel for user behavior tracking and marketing insights. Performance is moderate with good mobile optimization and accessibility features, though there is room for improvement in loading speed and cookie consent implementation. The technical stack is well-suited for a large non-profit organization, balancing content richness with maintainability. No significant technical debt or risks were identified from the HTML content analysis.
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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