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Security report for blockstream.com

Blockstream Corporation Inc. · Technology · United States

Medium risk. 5 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

59/100

Risk levelMedium

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

Blockstream Corporation Inc. is a leading global technology company specializing in Bitcoin and blockchain infrastructure. Their website showcases a comprehensive suite of products and services including wallets, hardware devices, blockchain platforms, and investment funds, targeting individuals, enterprises, and developers. The company positions itself as a foundational player in the future financial infrastructure built on Bitcoin technology. Technically, the website employs modern JavaScript libraries, analytics tools, and security features such as HTTPS and reCAPTCHA, reflecting a mature digital infrastructure. However, some areas such as explicit cookie consent and vulnerability disclosure could be improved. The security posture is strong with no evident vulnerabilities, but the absence of published incident response or security policies suggests room for enhancement. Overall, the website is professional, trustworthy, and well-optimized, supporting Blockstream's market leadership and credibility in the blockchain space.

Scanned

NIS2 and GDPR posture

GDPR outside view
28/ 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

5 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.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

    • 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

  2. 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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  3. 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"

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

Keep watching blockstream.com

This scan found 16 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

Email alerts on material changes and an exportable JSON history of every change.

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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
0
Security headers
55
Email security
95
DNS health
75
Network security
100
GDPR outside view
28
Average
59

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

Blockstream operates in the technology and finance sectors, focusing on Bitcoin and blockchain solutions. Their business model includes product sales (hardware wallets), software services (wallet apps, APIs), and asset management funds for institutional investors. The company targets a diverse audience including consumers, enterprises, and developers, supported by extensive documentation and community projects. Their market position is strong as a global leader with a broad product ecosystem. Partnerships and related domains indicate a well-integrated service offering. The website content and structure reflect a mature brand with consistent messaging and strong trust signals, including social media presence and professional design.

Security posture

The website demonstrates a solid security posture with HTTPS enforced, use of Google reCAPTCHA to protect forms, and no exposed sensitive data. Security headers are partially implemented but could be enhanced with explicit Content-Security-Policy and other headers. There is no visible security policy or incident response information, nor a security.txt file for vulnerability disclosure, which are recommended best practices. The use of multiple tracking pixels indicates moderate user tracking, which should be balanced with privacy compliance. Overall, the security maturity is good but can be improved by formalizing policies and disclosures.

Recommendations

  1. Implement a comprehensive Content-Security-Policy header to mitigate XSS and related attacks.
  2. Publish a security policy and incident response page to improve transparency and readiness.
  3. Add a security.txt file to facilitate vulnerability disclosures and responsible reporting.
  4. Introduce a cookie consent mechanism to comply with GDPR and enhance user privacy.
  5. Enhance accessibility features to improve inclusivity and compliance with standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Blockstream Corporation Inc.
Description
Blockstream is the global leader in Bitcoin and blockchain technologies, building the foundations for the financial infrastructure of the future.
Key services
Blockstream App (Bitcoin and Liquid wallet), Blockstream Jade (hardware wallet), Blockstream Asset Management (investment funds), Blockstream Enterprise (custody and treasury management), AMP (API for digital asset issuance), Blockstream Explorer API, Greenlight (Lightning node management), Cryptocurrency Data Feed, Core Lightning (Lightning Network implementation), Liquid Network (Bitcoin layer-2)
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Axios, Glide.js, Google Analytics, Google Tag Manager, Google reCAPTCHA, Font Awesome, Typekit Fonts, Rive animations, Transifex Live (translation)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • Use of HTTPS
  • Use of Google reCAPTCHA for forms
  • No exposed sensitive data in HTML
  • Use of security tokens (origin-trial meta tag)

Analytics and tracking

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

Advertising

Tracking pixels
Twitter Pixel, Reddit Pixel
Marketing tools
Transifex Live
Transparency
good

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-structured.
  2. Content is comprehensive and focused on Bitcoin and blockchain technology.
  3. No direct contact emails or phone numbers found on the main page.
  4. Privacy policy and terms of service are present and accessible.
  5. No explicit cookie consent mechanism detected.
  6. Use of multiple analytics and tracking services with moderate user tracking.
  7. No security.txt or vulnerability disclosure page found.
  8. No explicit security policy or incident response information available.
  9. Social media presence is strong with official accounts linked.
  10. No suspicious or malicious content detected.
Technical notes

Notes

The website uses a modern technology stack including jQuery, Axios, Glide.js for UI components, and Rive animations for interactive content. It integrates Google Analytics and Tag Manager for analytics and tracking, alongside social media pixels for marketing. The site is hosted using Blockstream's CDN and external CDNs, ensuring good performance and availability. The HTML is well-structured with proper meta tags for SEO and social sharing. Mobile optimization is good, and navigation is clear and consistent. Some technical debt is noted in the lack of explicit security headers and cookie consent, which are areas for modernization. Overall, the technical infrastructure supports a robust and professional online presence.
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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