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Security report for github.io

GitHub, Inc. · Technology · N/a

Low risk. 2 critical or high findings in GDPR outside view.

Security score

84/100

Risk levelLow

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

GitHub Pages documentation is an official resource provided by GitHub, Inc., a leading technology company specializing in software development platforms. The documentation site offers comprehensive guides and references for creating and managing websites hosted directly from GitHub repositories, with integration for tools like Jekyll. The target audience includes developers and teams seeking to leverage GitHub Pages for static site hosting. The business model centers on providing platform services that complement GitHub's core version control and collaboration offerings, positioning GitHub as a dominant player in the developer tools market. Technically, the site is built using modern web technologies including React and Next.js, hosted on GitHub's infrastructure. It demonstrates excellent performance, mobile optimization, and accessibility. The site employs HTTPS and likely uses standard security headers, ensuring secure and reliable access. The content is well-structured, professionally designed, and SEO optimized, reflecting a mature digital presence. From a security perspective, the site enforces HTTPS and shows no signs of exposed sensitive data or vulnerable libraries. However, explicit security policies, incident response contacts, and cookie consent mechanisms are not prominently provided, which could be improved to enhance compliance and transparency. The WHOIS data for the docs.github.com subdomain is not separately available, consistent with it being a subdomain of the main github.com domain, which is well-established and trusted. Overall, the website presents a high level of professionalism, security, and usability, with minor gaps in privacy compliance and security transparency. Strategic recommendations include adding visible cookie consent, publishing detailed security policies, and providing direct security contact information to strengthen trust and compliance.

Scanned

This is an earlier scan of github.io. View the latest report

NIS2 and GDPR posture

GDPR outside view
58/ 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

2 findings rated critical or high. Fix these first.

  1. 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

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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
75
Email security
80
DNS health
90
Network security
100
GDPR outside view
58
Average
84

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 github.io, from OffSeq Breach.

Total records
74,446
Employees
1
Customers
72,304
Third parties
2,141
Weak passwords
26%

Latest record dated 2026-10-06 · 10,468 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 github.io.

Select it in the checkout above.

Masked preview

  • sa•••@sasismene.github.iosasismene.github.io2026-10-06

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

GitHub, Inc. operates one of the largest and most influential software development platforms globally. GitHub Pages is a key service enabling users to host static websites directly from repositories, enhancing the platform's ecosystem. The documentation site supports a broad developer audience, reinforcing GitHub's market position as a comprehensive development and collaboration environment. The business benefits from strong brand recognition, extensive user base, and integration with popular tools like Jekyll. GitHub's parent company, Microsoft, further strengthens its market reach and resources. The documentation's open-source nature and community engagement reflect GitHub's collaborative culture and commitment to developer empowerment.

Security posture

The site demonstrates a mature security posture with enforced HTTPS, likely use of security headers, and no visible vulnerabilities or sensitive data exposure. However, the absence of explicit security policies, incident response information, and security.txt files limits transparency and may hinder rapid vulnerability reporting. The lack of cookie consent mechanisms could pose compliance risks under GDPR and similar regulations. Overall, the security maturity is high but could be enhanced by formalizing and publishing security governance documents and improving user privacy controls.

Recommendations

  1. Publish a clear and accessible security policy and incident response plan on the documentation site.
  2. Implement a visible cookie consent banner to comply with GDPR and other privacy regulations.
  3. Provide direct security contact emails (e.g., security@github.com) and consider adding a security.txt file.
  4. Enhance privacy compliance transparency by detailing data collection and retention policies.
  5. Maintain and regularly update security best practices documentation to reinforce user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
GitHub, Inc.
Description
Learn how to create a website directly from a repository on GitHub. Explore website building tools like Jekyll and troubleshoot issues with your GitHub Pages site.
Key services
GitHub Pages site creation, Jekyll static site generator integration, Custom domain configuration, HTTPS security for hosted sites, Troubleshooting and support documentation
Content quality
excellent
Branding
consistent

Technology

Stack
React (Next.js), JavaScript, CSS, SVG icons
Frameworks
Next.js
Platforms
GitHub Docs platform
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected
  • Secure forms with no direct data collection visible

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenge.
  2. Content is comprehensive, well-structured, and professionally presented.
  3. Strong use of HTTPS and modern web technologies.
  4. No direct contact emails or phone numbers found; contact is via community discussions and support links.
  5. No cookie consent mechanism visible, which may impact privacy compliance.
  6. No explicit security policy or incident response information found on the page.
  7. WHOIS data for the subdomain is not available, consistent with it being a subdomain of github.com.
Technical notes

Notes

The website leverages a modern React-based framework (Next.js) for server-side rendering and client-side interactivity, ensuring fast load times and excellent mobile responsiveness. The use of SVG icons and modular CSS contributes to a clean and efficient UI. Hosting on GitHub's infrastructure guarantees high availability and scalability. The technical implementation aligns with current best practices for performance, accessibility, and SEO. Opportunities exist to further enhance technical maturity by integrating advanced analytics with privacy safeguards and expanding accessibility features.
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. 93/100Low9 findingsView report
  2. 84/100 +11Low22 findingsView report
  3. 73/100Medium28 findingsView report
  4. 73/100Medium28 findingsView report
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