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Security report for calyxinstitute.org

The Calyx Institute · Technology · United States

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

65/100

Risk levelMedium

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

The Calyx Institute is a US-based non-profit organization established in 2010, dedicated to advancing digital privacy and internet freedom through education, tool development, and community support. Their offerings include membership programs providing mobile internet access via Wi-Fi hotspots and privacy-enhanced smartphones running CalyxOS. The organization maintains a strong community presence and actively supports open-source privacy projects through grantmaking initiatives. Technically, the website is built on a Ruby on Rails backend with Bootstrap frontend components, delivering a responsive and content-rich experience. Security posture is solid with HTTPS and CSRF protections, though improvements are recommended in DNSSEC, security headers, and vulnerability disclosure transparency. Overall, the site is professional, trustworthy, and well-aligned with its mission, serving a privacy-conscious audience effectively.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

5 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
    • 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 calyxinstitute.org

This scan found 27 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

€25per month

  • 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
42
Security headers
60
Email security
70
DNS health
55
Network security
100
GDPR outside view
65
Average
65

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

Calyx Institute occupies a niche in the privacy and digital rights non-profit sector, leveraging memberships and donations as primary revenue streams. Their competitive advantage lies in combining privacy tool development with community-driven grantmaking and educational outreach. The organization targets privacy advocates, underserved communities, and technology users seeking enhanced digital security. Growth indicators include expanding membership options like the new BYOD program and multi-year grant initiatives. Partnerships with entities like T-Mobile and educational organizations strengthen their ecosystem. The business model emphasizes transparency, community engagement, and open-source collaboration, positioning Calyx as a trusted leader in privacy advocacy.

Security posture

The Calyx Institute demonstrates a mature security posture with enforced HTTPS, CSRF protections, and no visible sensitive data exposure. However, the absence of DNSSEC, security headers, and a formal vulnerability disclosure process indicates areas for enhancement. No critical vulnerabilities or malware indicators were found. The organization lacks published incident response or security policies, which could improve stakeholder confidence. Compliance with GDPR appears adequate given the privacy policy, but cookie consent mechanisms are missing. Overall, the security culture seems proactive but could benefit from formalized policies and technical hardening.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
  2. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  4. Add a cookie consent banner or mechanism to comply with privacy regulations and enhance transparency.
  5. Develop and publish incident response and security policy documents to improve trust and preparedness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
The Calyx Institute
Description
The Calyx Institute is a non-profit organization focused on educating the public about privacy in digital communications and developing accessible privacy and security tools. They offer memberships that include mobile internet via Wi-Fi hotspots and privacy-focused phones with CalyxOS.
Key services
Mobile Internet Membership with unlimited data via hotspots, CalyxOS Membership with privacy-focused Pixel phones, Grantmaking programs supporting open-source privacy projects, Educational resources and community support
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, Bootstrap (navbar classes), FontAwesome (icons)
Frameworks
Bootstrap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • CSRF tokens present in meta tags
  • No exposed sensitive data in HTML
  • No suspicious scripts detected

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

Design
good
User experience
good
Content relevance
excellent
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is a non-profit focused on digital privacy and internet freedom.
  2. Content is rich with news updates, membership options, and educational resources.
  3. No cookie consent banner or explicit cookie policy found.
  4. No security.txt or vulnerability disclosure page detected.
  5. WHOIS data is consistent and transparent.
  6. No signs of WAF or content blocking.
  7. Social media presence is strong and consistent with brand.
  8. No advertising or tracking scripts detected in HTML content.
Technical notes

Notes

The website uses a modern Ruby on Rails backend with Bootstrap for responsive design, ensuring good mobile optimization and user experience. The tech stack is stable and well-maintained, with no outdated or vulnerable libraries detected in the HTML content. Performance is moderate, with potential for improvement through optimization and caching strategies. SEO is basic but functional, with proper meta tags and structured navigation. Accessibility is basic and could be enhanced with ARIA roles and better semantic markup. Hosting details are not explicit, but the registrar is reputable. Overall, the technical infrastructure supports the organization's mission effectively with room for modernization and security enhancements.
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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