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Security report for stx.is

Stacks · Technology · N/a

Medium risk. 3 critical or high findings in GDPR outside view and SSL/TLS.

Security score

75/100

Risk levelMedium

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

Stacks.co is a professional and well-established platform focused on enabling Bitcoin Layer 2 smart contracts, decentralized applications, and DeFi solutions. It positions itself as the leading Bitcoin L2 platform, providing developer tools, documentation, and an ecosystem of apps and wallets. The website targets developers, Bitcoin users, and DeFi builders, offering resources to build on Bitcoin's secure base layer. The platform also promotes sBTC, a Bitcoin-backed asset that facilitates programmable Bitcoin use. Technically, the website is built on modern technologies including Webflow CMS, jQuery, Google Fonts, and uses Plausible for privacy-focused analytics. It is hosted on AWS Cloudfront CDN, ensuring fast performance and excellent mobile optimization. Security-wise, the site enforces HTTPS and follows several best practices, though some security headers are not explicitly visible. Privacy compliance is good with a comprehensive privacy policy, but lacks a visible cookie consent mechanism. No direct contact emails or phone numbers are provided, which is common in crypto projects. Overall, the site is trustworthy, professional, and well-maintained, with no signs of malicious or adult content.

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

3 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

  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.

    • 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

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Keep watching stx.is

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.

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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
72
Security headers
60
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

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Stacks operates in the blockchain technology and finance sectors, focusing on Bitcoin Layer 2 solutions. Its business model revolves around providing a platform and ecosystem for decentralized app development on Bitcoin, leveraging smart contracts and DeFi. The company benefits from a strong market position as a leading Bitcoin L2 platform, with a growing ecosystem of partners and apps. Revenue streams likely include developer tools, ecosystem growth, and possibly token-related services. The target customers are developers, crypto enthusiasts, and enterprises interested in Bitcoin-based DeFi. The presence of a bounty program and active community channels indicates a mature and engaged ecosystem. Strategic partnerships and open-source contributions enhance its competitive advantage. The lack of explicit company registration details is typical for blockchain projects but slightly reduces transparency.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and no exposed sensitive data. The use of a security-first smart contract language (Clarity) and a public bounty program indicates a proactive approach to security. However, the absence of explicit security headers in the HTML and no visible incident response or security policy pages are gaps that could be improved. No vulnerabilities or suspicious patterns were detected in the content. Privacy compliance is good but could be enhanced with a cookie consent mechanism. Overall, the security posture is strong for a blockchain ecosystem site but would benefit from more visible security governance documentation.

Recommendations

  1. Implement and visibly document security headers such as Content-Security-Policy and X-Frame-Options to enhance protection against common web attacks.
  2. Add a cookie consent banner or mechanism to comply fully with GDPR and other privacy regulations.
  3. Publish a dedicated security policy and incident response page with clear contact information for reporting vulnerabilities or incidents.
  4. Provide verified company contact information to improve trust and facilitate communication.
  5. Maintain and promote transparency around domain registration and company information to strengthen legitimacy perception.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stacks
Description
Activate the Bitcoin economy with apps & smart contracts that use Bitcoin as a secure base layer.
Key services
Bitcoin Layer 2 smart contracts, Developer tools and documentation, Ecosystem apps and wallets, sBTC (Bitcoin-backed asset), Community and educational resources
Content quality
excellent
Branding
consistent

Technology

Stack
Webflow CMS, jQuery 3.5.1, Google Fonts (Open Sans, Montserrat), Plausible Analytics, SVG graphics, JavaScript animations (Lottie)
Frameworks
Webflow
Platforms
Stacks blockchain ecosystem
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of security-first programming language Clarity mentioned
  • Bounty program linked

Analytics and tracking

Services
plausible.io
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
plausible.io
Marketing tools
plausible.io
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 no blocking detected
  2. WHOIS data is redacted, typical for privacy protection in crypto domains
  3. Strong focus on Bitcoin Layer 2 technology and developer ecosystem
  4. No direct contact emails or phone numbers found on main site
  5. Privacy policy is present and comprehensive, cookie consent missing
  6. Security best practices mostly followed, but some headers not visible
  7. Active community presence with links to Discord, Telegram, Twitter, Reddit
  8. Use of modern web technologies and analytics with privacy focus
  9. No signs of adult or questionable content
Technical notes

Notes

The website is built on a modern and scalable infrastructure using Webflow CMS, which allows for rapid content updates and responsive design. It leverages popular web technologies such as jQuery and Google Fonts, and uses Plausible Analytics for privacy-conscious user tracking. Hosting on AWS Cloudfront CDN ensures fast content delivery globally. The site is well-optimized for mobile devices and accessibility, with clean navigation and structured content. There is no indication of technical debt or legacy systems. Opportunities exist to enhance security headers and privacy compliance features. Overall, the technical implementation supports a high-quality user experience and robust platform 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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