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Security report for coinmarketcap.com

CoinMarketCap · Finance · N/a

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

86/100

Risk levelLow

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

CoinMarketCap is a leading cryptocurrency market data platform founded in 2013, providing comprehensive and real-time data on cryptocurrencies, market capitalizations, and trends. It serves a broad audience including traders, investors, and financial institutions by offering free access to live and historical crypto data, API services, and educational resources. The platform is well-positioned in the crypto finance sector with a strong brand and extensive market reach. Technically, the website employs modern web technologies such as React and Next.js, hosted on reputable infrastructure with fast performance and good mobile optimization. Security posture is strong with HTTPS enforcement and domain registration protections, though explicit security policies and vulnerability disclosures are not published. Privacy compliance is weak due to the absence of visible privacy and cookie policies. Overall, the site is professional, trustworthy, and content-rich, but could improve transparency and compliance documentation.

Scanned

This is an earlier scan of coinmarketcap.com. View the latest report

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

2 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 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 coinmarketcap.com

This scan found 13 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
82
Security headers
90
Email security
87
DNS health
85
Network security
100
GDPR outside view
73
Average
86

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

CoinMarketCap holds a dominant market position as a trusted source for cryptocurrency data, leveraging a business model based on data aggregation, API monetization, advertising, and educational campaigns. Its competitive advantage lies in comprehensive data coverage, real-time updates, and a user-friendly interface. The platform targets a diverse customer base from retail crypto enthusiasts to institutional investors. Growth is supported by continuous feature expansion such as DexScan and NFT analytics. Partnerships and integrations with exchanges and blockchain projects enhance its ecosystem. Strategic observations include the need to bolster privacy and security transparency to maintain trust amid increasing regulatory scrutiny.

Security posture

The website demonstrates a mature security posture with HTTPS enabled, domain status locks, and no visible sensitive data exposure. However, it lacks published security policies, incident response contacts, and vulnerability disclosure mechanisms, which are critical for transparency and user trust. The absence of DNSSEC is a minor gap in DNS security. No known vulnerabilities or malicious indicators were detected. Compliance with GDPR and other privacy regulations is unclear due to missing privacy and cookie policies. Incident response readiness and security culture indicators are not publicly documented, representing an area for improvement.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with clear GDPR compliance statements.
  2. Implement and display a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Add explicit security and incident response policies including dedicated contact channels (e.g., security@coinmarketcap.com).
  4. Enable DNSSEC to strengthen DNS security and prevent spoofing.
  5. Provide clear contact information including data protection officer details to enhance transparency and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CoinMarketCap
Description
CoinMarketCap provides top cryptocurrency prices and charts, listed by market capitalization. It offers free access to current and historic data for Bitcoin and thousands of altcoins. The site aims to be the number one location online for crypto market data, providing unbiased and accurate information.
Key services
Cryptocurrency price tracking, Market capitalization data, Historical price charts, Crypto API services, Trending and leaderboard data, NFT statistics, DEX data (DexScan), Educational content (Academy, Glossary), Campaigns like Airdrops and Learn & Earn
Content quality
excellent
Branding
consistent

Technology

Stack
React (Next.js), JavaScript, CSS, Web fonts (Inter, CMC V2), AWS DNS hosting
Frameworks
Next.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Domain status locks to prevent unauthorized changes
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Ad networks
FusePlatform
Transparency
basic

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. No explicit privacy, cookie, or terms of service policies found in the provided HTML content.
  3. No contact emails or phone numbers explicitly found in the HTML content.
  4. Strong use of modern web technologies and frameworks.
  5. Good SEO and accessibility practices observed.
  6. No explicit security or incident response policies published.
  7. No vulnerability disclosure or security.txt found.
  8. Social media presence confirmed via JSON-LD structured data.
  9. Domain WHOIS data indicates a legitimate and stable registration.
Technical notes

Notes

The website is built on a modern React-based framework (Next.js) with optimized CSS and font loading, ensuring fast and responsive user experience across devices. Hosting is managed via reputable providers with AWS DNS services and MarkMonitor as registrar, indicating robust infrastructure. SEO is well-implemented with meta tags, Open Graph, and JSON-LD structured data. Accessibility features are present but could be further enhanced. No CMS detected, suggesting a custom or proprietary platform. Performance is fast with deferred and asynchronous script loading. Technical risks are minimal but could include reliance on third-party scripts for ads and analytics, which should be monitored for security and privacy compliance.
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

Earlier scans of this domain

  1. 86/100Low22 findingsView report
  2. 86/100 −2Low22 findingsView report
  3. 88/100Low17 findingsView report
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