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Security report for lineageos.org

The LineageOS Project · Technology · Iceland

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

66/100

Risk levelMedium

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

LineageOS is a well-established open-source Android operating system distribution project founded in 2016. It targets Android device users, developers, and power users seeking customization and extended device longevity. The project operates with a strong community-driven model supported by donations and offers monthly security updates and open-source apps. The website reflects a professional and consistent brand image with excellent content quality and user experience. Technically, the site uses modern web technologies including Material Kit CSS, jQuery, and Cloudflare CDN, ensuring fast performance and mobile optimization. Security posture is good with HTTPS enforced and domain transfer protections, though improvements are possible by enabling DNSSEC and adding security headers. Privacy compliance is basic, with a privacy policy and terms of service present but lacking cookie consent mechanisms and explicit GDPR compliance indicators. Contact information is limited to community channels such as Reddit, with no direct company emails or phone numbers published. Overall, the website is trustworthy, safe, and well-positioned in the open-source Android ecosystem.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

7 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"

    • 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 Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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 lineageos.org

This scan found 22 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
75
DNS health
75
Network security
100
GDPR outside view
35
Average
66

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

LineageOS holds a strong market position as a leading open-source Android distribution with a large and active community. Its business model relies on community contributions and donations via PayPal and Patreon. The project benefits from transparency and regular updates, which foster trust and user engagement. The target audience includes Android enthusiasts, developers, and users seeking device customization and extended device lifespan. The project’s ecosystem includes community forums, a wiki, and status monitoring. While no formal partnerships or subsidiaries are identified, the project leverages external platforms such as Reddit, GitHub, and Fosstodon for community interaction and code hosting. The absence of direct contact details suggests a decentralized community governance model.

Security posture

The website enforces HTTPS and uses Cloudflare for CDN and security, which provides a solid baseline for secure communications and performance. The domain is protected with clientTransferProhibited status, though DNSSEC is not enabled, representing a potential area for DNS security enhancement. No explicit security headers were detected in the HTML content, which could improve protection against common web attacks. The site lacks a published security policy or incident response contact, which limits transparency for vulnerability reporting and incident handling. Monthly security updates for supported devices are highlighted, indicating a proactive approach to device security. No vulnerabilities or exposed sensitive data were identified in the analysis. Overall, the security posture is good but could be improved with additional headers, policies, and transparency.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Implement and serve security headers such as Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-Content-Type-Options.
  3. Add a cookie consent banner or mechanism to comply with privacy regulations and improve user transparency.
  4. Publish a dedicated security policy and incident response contact information to facilitate vulnerability disclosure and improve trust.
  5. Consider providing direct contact emails or a contact form for business and security inquiries to enhance communication channels.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
The LineageOS Project
Description
LineageOS is a free and open-source operating system for various devices, based on the Android mobile platform. It extends the functionality and lifespan of mobile devices from more than 20 different manufacturers through a global open-source community.
Key services
Custom Android OS builds, Monthly security updates, Open-source apps and tools, Community support and development
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS (Material Kit), JavaScript (jQuery 3.3.1 slim), Cloudflare CDN, Google Fonts
Frameworks
Material Kit CSS
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Client transfer prohibited domain status
  • Monthly security updates mentioned

Analytics and tracking

Services
Cloudflare Insights
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Cloudflare Insights
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 well maintained.
  2. Content is comprehensive about the LineageOS project and its offerings.
  3. No direct contact emails or phone numbers found; community contact via Reddit is promoted.
  4. No explicit privacy cookie banner or consent mechanism detected.
  5. No security.txt or explicit vulnerability disclosure policy found.
  6. Use of Cloudflare CDN and analytics for performance and monitoring.
  7. No suspicious or malicious content detected.
Technical notes

Notes

The website is built using modern web standards with HTML5, CSS based on Material Kit, and JavaScript including jQuery. It uses Google Fonts for typography and Cloudflare for CDN and analytics. The site is mobile optimized and responsive, with good SEO meta tags and Open Graph descriptions. Performance is fast due to CDN usage and minimal external dependencies. No CMS is detected, suggesting a custom or static site architecture. The site includes interactive elements such as a rotating image on scroll and external links to community resources. Technical debt appears low, but the absence of security headers and cookie consent mechanisms indicates areas for modernization and compliance improvements.
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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