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Security report for metamask.io

Consensys Software Inc · Technology · United States

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

Security score

78/100

Risk levelLow

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

MetaMask is a leading cryptocurrency wallet platform and blockchain infrastructure provider, serving over 100 million users globally. It offers a comprehensive suite of services including crypto wallet management, token swaps, NFT trading, staking, and developer tools such as SDKs and embedded wallets. The platform is positioned as a key player in the Web3 ecosystem, targeting both end-users and developers. Technically, the website leverages modern frameworks like Next.js and React, hosted on Cloudflare infrastructure, ensuring fast performance and mobile optimization. Security posture is strong with HTTPS enforcement, security headers, and domain registration consistency, though DNSSEC is not enabled and explicit security policies are not publicly detailed. Privacy compliance is supported by a comprehensive privacy and cookie policy with consent management via Osano. Overall, MetaMask demonstrates a mature digital presence with high trustworthiness and professional execution.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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Keep watching metamask.io

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

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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
75
Security headers
70
Email security
87
DNS health
80
Network security
100
GDPR outside view
58
Average
78

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

MetaMask operates in the technology and finance sectors, focusing on blockchain and cryptocurrency services. Its business model revolves around providing a secure and user-friendly crypto wallet and developer tools, monetizing through transaction fees, partnerships, and premium services like perpetual trading and crypto cards. The company benefits from its parent company Consensys, a major blockchain software firm, enhancing its market credibility. MetaMask's ecosystem includes extensive developer resources, social media engagement, and a broad user base, indicating strong growth and competitive positioning. Strategic partnerships and a focus on security and compliance further solidify its market stance.

Security posture

The website exhibits a high level of security maturity with HTTPS, multiple security headers, and domain registration controls. However, the absence of DNSSEC and lack of publicly available security policies or incident response contacts represent areas for improvement. No vulnerabilities or exposed sensitive data were detected in the analysis. Privacy compliance is well addressed with cookie consent mechanisms and GDPR-aligned policies. The security culture is implied by the use of trusted third-party services and transparent domain registration. Enhancing incident response transparency and vulnerability disclosure would further strengthen security posture.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Publish a dedicated security policy and incident response plan accessible from the website.
  3. Provide direct contact channels for security incidents such as security@ or abuse@ emails.
  4. Establish and publicize a vulnerability disclosure program to encourage responsible reporting.
  5. Regularly review and update third-party scripts and dependencies to mitigate supply chain risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Consensys Software Inc
Description
Set up your crypto wallet and access all of Web3 and enjoy total control over your data, assets, and digital self. The go-to web3 wallet for 100+ million users.
Key services
Crypto wallet, Token swaps, NFT collection and trading, Staking and earning rewards, Developer SDK and tools, Perpetual trading with leverage, Crypto card for spending
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Webpack, Cloudflare DNS and Registrar, Osano Consent Manager, Google Tag Manager
Frameworks
Next.js
Platforms
Web, Chrome Extension
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Client transfer prohibited domain status
  • Use of Cloudflare DNS and registrar
  • Consent management via Osano

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Osano Consent Manager
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 maintained.
  2. Strong focus on crypto wallet and Web3 developer tools.
  3. Comprehensive navigation with clear calls to action.
  4. Use of modern web technologies and consent management.
  5. No signs of phishing or malicious content.
  6. Social media presence is active and consistent.
  7. No direct company contact emails or phone numbers found publicly.
  8. Security policies and incident response details are not explicitly published.
Technical notes

Notes

MetaMask's website is built on a modern tech stack including React and Next.js, optimized for performance and mobile devices. Hosting on Cloudflare provides robust CDN and security features. The site uses Osano for consent management and Google Tag Manager for analytics, indicating a mature approach to privacy and data collection. The technical implementation is clean with valid HTML and CSS, good SEO practices, and accessibility considerations. There is no evidence of technical debt or outdated technologies. Opportunities exist to enhance DNS security and provide more transparent security documentation.
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. 81/100Low22 findingsView report
  2. 75/100Medium20 findings · partial scanView report
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