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Security report for celestia.org

Celestia · Technology · N/a

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

Security score

75/100

Risk levelMedium

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

Celestia is a modular blockchain platform that empowers developers and institutions to deploy sovereign blockchains and scalable decentralized applications with full-stack control. The website presents a professional and modern digital presence, leveraging advanced web technologies such as Next.js and React, hosted with Cloudflare DNS services. The platform emphasizes scalability, sovereignty, and interoperability within the Web3 ecosystem, positioning itself as a foundational infrastructure provider. Security posture is strong with HTTPS enforcement and standard security headers, though DNSSEC is not enabled and no explicit privacy or security policies are published. The absence of contact information and formal privacy documentation suggests areas for compliance improvement. Overall, the website is trustworthy, well-designed, and content-rich, targeting blockchain developers and institutional users.

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

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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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 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 celestia.org

This scan found 18 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
75
Security headers
55
Email security
85
DNS health
80
Network security
100
GDPR outside view
53
Average
75

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 celestia.org, from OffSeq Breach.

No leaked records found

Breach holds no records for celestia.org right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

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

Celestia operates in the technology sector, focusing on blockchain infrastructure and modular scaling solutions. Its business model revolves around providing a data availability layer and support for rollups and sovereign chains, enabling a broad ecosystem of decentralized applications. The company has a mature domain age and a consistent brand presence across social media platforms. The ecosystem includes various projects and partners, indicating a growing network effect. Revenue streams likely include network fees, token utility (TIA token), and ecosystem services. The target audience includes developers, blockchain projects, and institutions seeking scalable blockchain solutions. The company demonstrates strategic positioning as an innovative leader in modular blockchain technology.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and multiple security headers present, including HSTS, X-Frame-Options, and Content-Security-Policy. The domain is protected with clientTransferProhibited status and privacy-protected WHOIS registration. However, DNSSEC is not enabled, which could improve DNS security. No sensitive data or vulnerable libraries were detected in the HTML content. The lack of published security policies, incident response contacts, or vulnerability disclosure mechanisms indicates room for improvement in transparency and readiness. Overall, the security posture is strong but could benefit from enhanced compliance documentation and DNS security.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy to improve privacy compliance and user trust.
  2. Implement a cookie consent mechanism to comply with GDPR and other privacy regulations.
  3. Enable DNSSEC to enhance DNS security and prevent spoofing attacks.
  4. Provide clear contact information including security incident response contacts and general inquiries.
  5. Establish and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Celestia
Description
Celestia is the modular blockchain powering unstoppable applications with full-stack control. Deploy your own blockchain as easily as a smart contract with abundant throughput.
Key services
Modular blockchain network, Data availability layer, Support for rollups and sovereign chains, Light node operation, Ecosystem support for decentralized applications
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Cloudflare DNS, JavaScript, CSS
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • No exposed sensitive data in HTML
  • Use of privacy protection for WHOIS

Analytics and tracking

Services
Plausible Analytics
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Plausible
Marketing tools
Plausible Analytics
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 multimedia
  2. No privacy or cookie policies explicitly found in HTML content
  3. No contact emails or phone numbers explicitly listed
  4. Social media presence is strong with official Twitter, Discord, GitHub links
  5. Modern web technologies and frameworks used
  6. Security best practices mostly followed except DNSSEC not enabled
  7. No forms detected in the HTML content
  8. WHOIS data shows privacy protection and long domain age
  9. No explicit security or incident response policies published
  10. No vulnerability disclosure or security.txt found
Technical notes

Notes

The website is built using modern web technologies including React and Next.js, ensuring fast performance and excellent mobile optimization. Hosting is supported by Cloudflare DNS, providing reliable and secure DNS resolution. The site includes structured data (JSON-LD) for SEO and rich snippets, and uses plausible analytics for privacy-conscious tracking. Accessibility features such as skip links and semantic HTML are present, contributing to good accessibility scores. No CMS was detected, indicating a custom or framework-based site. The technical infrastructure is robust, with no visible technical debt or deprecated libraries. Opportunities exist to enhance DNS security and formalize privacy and security compliance documentation.
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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