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Security report for 0x.org

0x · Finance · United Kingdom

Low risk. 1 critical or high finding in SSL/TLS.

Security score

83/100

Risk levelLow

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

0x.org is a well-established platform providing powerful APIs for developers to build financial and decentralized trading applications on crypto rails. The website demonstrates a strong market position with extensive liquidity aggregation from over 130 exchanges and a suite of modular DeFi solutions including Swap API, Gasless API, and Trade Analytics API. The platform targets developers and businesses in the crypto and DeFi space, offering fast, reliable, and scalable infrastructure. The technical infrastructure is modern, leveraging Webflow CMS, AWS hosting, and advanced analytics tools such as Amplitude and FullStory, ensuring a high-quality user experience and performance. Security posture is solid with HTTPS enabled and domain protections in place, though some improvements like enabling DNSSEC and publishing security policies could enhance trust. Privacy compliance is limited due to the absence of explicit privacy and cookie policies, which is a notable gap. Overall, the website is professional, trustworthy, and technically mature, serving a large developer audience with comprehensive API offerings.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
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

1 finding rated critical or high. Fix these first.

  1. 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

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

Keep watching 0x.org

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

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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
77
Security headers
60
Email security
85
DNS health
85
Network security
100
GDPR outside view
88
Average
83

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

0x.org operates in the finance and technology sectors, focusing on decentralized exchange infrastructure and developer APIs. Its business model revolves around providing API services that enable third-party applications to integrate crypto trading and DeFi functionalities seamlessly. The platform enjoys strong partnerships with major wallets and exchanges, enhancing its ecosystem reach. Revenue streams likely include API usage fees and enterprise integrations. The company demonstrates growth through extensive case studies and a broad user base of over 521 projects powered by its APIs. The presence of a dashboard and developer resources indicates a focus on developer experience and retention. The use of privacy protection in WHOIS is consistent with industry norms, and the domain age adds credibility despite being older than the project itself.

Security posture

The security posture of 0x.org is generally strong with HTTPS enforced and domain status flags preventing unauthorized changes. However, the lack of DNSSEC implementation and absence of published security policies or incident response contacts are areas for improvement. The website uses modern analytics and customer support tools, which may collect user data, but no explicit privacy or cookie policies were found to inform users about data handling. No vulnerabilities or exposed sensitive data were detected in the analysis. The platform would benefit from publishing a security.txt file and vulnerability disclosure program to enhance transparency and trust. Overall, the security maturity is good but could be elevated with better privacy and incident response disclosures.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with clear GDPR compliance statements.
  2. Implement DNSSEC to enhance DNS security and prevent spoofing.
  3. Add a publicly accessible security policy and incident response contact information.
  4. Introduce a vulnerability disclosure program and publish a security.txt file.
  5. Enhance transparency around data collection and retention practices to improve privacy compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
0x
Description
0x provides powerful APIs enabling developers to embed crypto trading, swaps, and DeFi solutions into their applications with access to millions of tokens and liquidity from over 130 exchanges.
Key services
Swap API, Gasless API, Trade Analytics API
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Webflow CMS, Google Fonts, Amplitude Analytics, FullStory, Intercom, Popper.js, Tippy.js
Frameworks
Webflow
Platforms
AWS (Amazon Registrar, AWS DNS servers)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Use of clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited domain statuses to prevent unauthorized changes
  • Use of CSP and integrity attributes on scripts (partial evidence from script tags)

Analytics and tracking

Services
Amplitude, FullStory
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Amplitude, FullStory, Intercom
Marketing tools
Intercom
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional crypto API platform targeting developers.
  2. No explicit privacy or cookie policies found on main page or common locations.
  3. Contact is available via a contact form; no direct emails or phone numbers found.
  4. Strong branding and partner logos indicate trust and market presence.
  5. Use of modern analytics and customer support tools.
  6. No security.txt or vulnerability disclosure found.
  7. DNSSEC not enabled, which is a minor security gap.
  8. WHOIS privacy protection used, common in crypto industry.
Technical notes

Notes

The website is built on a modern technology stack including Webflow CMS, AWS hosting, and uses JavaScript libraries such as Popper.js and Tippy.js for UI enhancements. Analytics are handled via Amplitude and FullStory, providing detailed user behavior insights. The site is mobile-optimized with good accessibility and SEO practices. Performance is fast with optimized images and asynchronous script loading. The domain is registered with Amazon Registrar and uses privacy protection services. The absence of DNSSEC is a minor technical gap. Overall, the technical infrastructure is robust, scalable, and well-suited for a developer-focused API platform.
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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