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Security report for bitcoin.org

Bitcoin Project · Technology · Iceland

Medium risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

71/100

Risk levelMedium

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

Bitcoin.org is a well-established, authoritative website dedicated to providing comprehensive educational resources about Bitcoin, the pioneering decentralized cryptocurrency. The site targets individuals, businesses, and developers interested in understanding and participating in the Bitcoin ecosystem. It operates as a community-funded project, relying on donations to maintain and improve its offerings. The website's content is rich, professionally designed, and highly relevant, supporting a broad audience with clear navigation and multilingual support. Technically, the website employs modern web technologies including HTML5, CSS3, JavaScript, jQuery, and Lottie animations to deliver an engaging user experience. It leverages Cloudflare for DNS and likely CDN services, ensuring fast performance and robust availability. The site is mobile-optimized and accessible, with good SEO practices and proper meta tags. Analytics are implemented via Google Analytics and Tag Manager, with a cookie consent mechanism in place to comply with privacy regulations. From a security perspective, the website enforces HTTPS and uses clientTransferProhibited domain status to prevent unauthorized transfers. However, DNSSEC is not enabled, and no explicit security policy or incident response contacts are published. No vulnerabilities or exposed sensitive data were detected. Privacy compliance is strong with a clear privacy policy and cookie consent. The domain registration is privacy-protected but consistent with the business history and nature of the site. Overall, Bitcoin.org presents a high level of professionalism, trustworthiness, and technical maturity. It is a safe and reliable resource for Bitcoin education and community engagement. Strategic recommendations include enabling DNSSEC, publishing a formal security policy and incident response contacts, and implementing additional security headers to further enhance security posture.

Scanned

This is an earlier scan of bitcoin.org. View the latest report

NIS2 and GDPR posture

GDPR outside view
68/ 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

  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 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 bitcoin.org

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

€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
65
Security headers
45
Email security
70
DNS health
80
Network security
100
GDPR outside view
68
Average
71

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

Bitcoin.org holds a leading position as an educational and informational platform within the cryptocurrency industry. Its business model is community-funded, relying on donations rather than commercial transactions. The site serves a diverse audience including individuals new to Bitcoin, businesses exploring cryptocurrency adoption, and developers building on Bitcoin technology. The platform's longevity since 2008 and consistent branding reinforce its credibility. Partnerships with developer.bitcoin.org and references to the Bitcoin Foundation indicate a strong ecosystem presence. The absence of direct commercial offerings suggests a focus on knowledge dissemination and community support rather than revenue generation. Growth indicators include multilingual support and active content updates. The donation mechanism supports sustainability without compromising user trust.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS, clientTransferProhibited domain status, and no detected vulnerabilities or exposed sensitive data. The use of privacy protection for WHOIS is justified given the cryptocurrency context. However, the lack of DNSSEC and absence of published security policies or incident response contacts represent gaps in transparency and defense-in-depth. Cookie consent implementation aligns with GDPR requirements, but no security.txt or vulnerability disclosure program is evident. The site would benefit from enhanced security headers and clearer communication channels for security incidents. Overall, the security posture is strong but could be improved with formalized policies and additional DNS security measures.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve DNS security.
  2. Publish a comprehensive security policy and incident response contact information on the website.
  3. Implement security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Create and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Provide clearer contact information for security-related inquiries to enhance trust and responsiveness.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bitcoin Project
Description
Bitcoin is an innovative payment network and a new kind of money. It uses peer-to-peer technology to operate without central authority or banks. Bitcoin is open-source and decentralized, allowing everyone to participate. The website provides educational resources, guides, and tools to get started with Bitcoin.
Key services
Educational content about Bitcoin, Guides for individuals and businesses, Developer resources, Donation platform
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, jQuery, Lottie animations, Google Analytics, Google Tag Manager, Cloudflare DNS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Client transfer prohibited domain status
  • No exposed sensitive data in HTML
  • Cookie consent banner implemented
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

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 no blocking detected.
  2. Strong focus on education and community support for Bitcoin.
  3. No direct contact emails or phone numbers found on the main page.
  4. Cookie consent and privacy policy are implemented and GDPR compliant.
  5. No explicit security policy or incident response information published.
  6. Use of modern web technologies and animations enhances user experience.
  7. No suspicious or malicious content detected.
  8. Donation mechanism prominently displayed with Bitcoin address and QR code.
Technical notes

Notes

The website is built on a custom CMS or static framework using modern web standards including HTML5, CSS3, and JavaScript with jQuery and Lottie for animations. It integrates Google Analytics and Tag Manager for user behavior tracking, balanced with a cookie consent mechanism for privacy compliance. Hosting and DNS are managed via Cloudflare, providing performance and security benefits. The site is mobile-optimized and accessible, with good SEO metadata and multilingual support. No deprecated or vulnerable libraries were detected. Performance is fast with no blocking content or errors. Opportunities exist to enhance DNS security with DNSSEC and to adopt additional security headers for improved protection.
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. 71/100Medium30 findingsView report
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