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Security report for subsquid.io

Subsquid / SQD · Technology · N/a

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

Security score

68/100

Risk levelMedium

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

Subsquid (SQD) operates a decentralized data lake and indexing network designed to provide fast, scalable, and cost-effective data access for AI agents and blockchain networks. The platform supports over 150 networks and offers key products including the SQD Network for delegators and node operators, the Squid SDK for developers, and SQD Cloud as an enterprise-grade hosted indexing service. The website positions the company as an innovative player in the decentralized data infrastructure space, targeting developers and blockchain participants. Technically, the website is built on Webflow CMS and leverages modern JavaScript libraries such as Three.js for animations, Swiper.js for sliders, and ApexCharts for data visualization. It integrates multiple analytics platforms including Google Tag Manager, PostHog, and Plausible, indicating a mature digital analytics setup. The site is mobile optimized, fast loading, and well-structured with clear navigation. From a security perspective, the site uses HTTPS and implements cookie consent mechanisms, but lacks explicit security headers and published security policies. No direct contact information or vulnerability disclosure policies are present, which could be improved to enhance trust and compliance. The WHOIS data is privacy protected or unavailable, common for blockchain-related projects, but no suspicious patterns were detected. Overall, the website demonstrates a professional and credible presence with strong technical implementation and business positioning. Strategic improvements in privacy transparency, security disclosures, and contact availability would further strengthen its security posture and compliance standing.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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 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 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 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

      SSL Certificate Expires Soon

      SSL certificate expires in 12 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

Need hands-on remediation? Email guard@offseq.com

Keep watching subsquid.io

This scan found 24 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

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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
62
Security headers
30
Email security
70
DNS health
75
Network security
100
GDPR outside view
73
Average
68

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

Subsquid operates in the technology sector focusing on decentralized data indexing for AI and blockchain ecosystems. Its business model revolves around providing infrastructure services such as node operation, SDK tools, and cloud hosting to developers and network participants. The company targets a niche market of blockchain developers and AI agents requiring scalable data access. The presence of a GitHub repository with significant stars and active community channels (Telegram, Discord) indicates a strong developer ecosystem and community engagement. The website content and product offerings suggest a medium-sized enterprise with growth potential in the decentralized data infrastructure market. No parent or subsidiary companies were identified. The company emphasizes innovation, decentralization, and developer empowerment as competitive advantages.

Security posture

The website exhibits a moderate to good security maturity level. HTTPS is enforced, and cookie consent mechanisms are implemented, reflecting awareness of privacy and security best practices. However, the absence of explicit security headers (such as CSP, HSTS, X-Frame-Options) and lack of published security or incident response policies indicate areas for improvement. No vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of direct contact information for security incidents or a vulnerability disclosure policy reduces transparency and may impact incident response readiness. Compliance indicators such as GDPR adherence are minimal due to missing privacy policy documentation. Overall, the security posture is adequate for a technology startup but would benefit from enhanced transparency and formalized policies.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service to improve transparency and compliance.
  2. Implement and document security headers (CSP, HSTS, X-Frame-Options) to strengthen web security.
  3. Provide clear contact information for security incidents and establish a vulnerability disclosure policy.
  4. Enhance GDPR compliance by detailing data collection, retention, and user rights in privacy documentation.
  5. Regularly audit and update third-party libraries and analytics tools to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Subsquid / SQD
Description
SQD unlocks indexing and data access at a speed, scale, and price never before possible. Supports 150+ networks. Decentralized network.
Key services
SQD Network (delegators, node operators, gateways), Squid SDK (indexing toolkit), SQD Cloud (hosted indexing service)
Content quality
good
Branding
consistent

Technology

Stack
Webflow CMS, Google Tag Manager, PostHog analytics, Plausible analytics, Swiper.js, ApexCharts, Three.js
Frameworks
Webflow
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (via GTM), PostHog, Plausible
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
PostHog, Plausible
Marketing tools
PostHog, Plausible
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenge
  2. Content is focused on decentralized data indexing for AI and blockchain
  3. Strong developer and community focus with SDK, network, and cloud services
  4. Good use of modern web technologies and analytics tools
  5. Lacks explicit privacy policy and terms of service pages
  6. No direct contact emails or phone numbers found on main pages
  7. WHOIS data is privacy protected or unavailable, typical for this sector
Technical notes

Notes

The website is built using Webflow CMS, leveraging modern JavaScript libraries including Three.js for animations, Swiper.js for sliders, and ApexCharts for charts. It integrates multiple analytics platforms such as Google Tag Manager, PostHog, and Plausible, indicating a sophisticated approach to user behavior tracking and performance monitoring. The site is well-optimized for mobile devices and exhibits fast loading times. The use of CDN-hosted assets and asynchronous script loading contributes to performance. However, the site lacks some advanced security headers and formalized privacy documentation. The technical infrastructure is modern and scalable, suitable for a technology company targeting developers and blockchain participants.
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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