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Security report for reverb.com

Reverb · E-commerce · United States

Low risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

80/100

Risk levelLow

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

Reverb is a well-established online marketplace specializing in the sale of new, used, and vintage musical instruments and gear. Founded in 2002 and currently owned by Etsy, Inc., it serves a global audience of musicians and music enthusiasts. The platform offers a comprehensive marketplace experience with seller tools, buyer protections, and a strong brand presence. Technically, the website employs modern web technologies including React and AWS hosting, ensuring fast performance and mobile optimization. Security is robust with HTTPS enforced, secure payment encryption via Adyen, and standard security headers, although DNSSEC is not enabled and no explicit security policy or incident response contacts are publicly available. Privacy compliance is strong with clear GDPR-aligned privacy and cookie policies and consent mechanisms. Overall, the website demonstrates high professionalism, trustworthiness, and technical maturity.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 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

4 findings rated critical or high. Fix these first.

  1. 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. 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

  3. 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

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

Keep watching reverb.com

This scan found 15 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
75
Security headers
55
Email security
85
DNS health
85
Network security
100
GDPR outside view
80
Average
80

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

Reverb operates in the e-commerce sector with a niche focus on musical instruments, positioning itself as a leading marketplace in this vertical. Its business model centers on connecting buyers and sellers worldwide, leveraging Etsy's ownership for scale and resources. The company targets musicians, collectors, and gear enthusiasts, offering a broad range of products and seller services. The presence of comprehensive policies and a secure payment infrastructure supports customer trust and regulatory compliance. The platform's integration with social media and marketing tools indicates a mature digital marketing strategy. No subsidiaries were identified, but Etsy's parent company status is confirmed. The company benefits from a consistent brand and high-quality content, supporting its market position.

Security posture

Reverb's security posture is strong, with HTTPS enforced site-wide, use of clientTransferProhibited domain status, and secure payment processing through Adyen. The presence of multiple security headers such as Content-Security-Policy and Strict-Transport-Security enhances protection against common web threats. However, DNSSEC is not enabled, which could be a future enhancement to prevent DNS spoofing. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The absence of a public security policy or incident response contact is a gap that could be addressed to improve transparency and readiness. No vulnerability disclosure program or security.txt file was found, which is recommended for mature e-commerce platforms. Overall, the site demonstrates good security hygiene but could improve in incident response communication.

Recommendations

  1. Enable DNSSEC to strengthen DNS security and prevent spoofing attacks.
  2. Publish a dedicated security policy page detailing security practices and incident response procedures.
  3. Establish and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance transparency by providing clear security contact channels for users and researchers.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Reverb
Description
Reverb is an online marketplace for buying and selling new, used, and vintage musical instruments and gear.
Key services
Marketplace for new and used musical instruments, Seller tools and storefronts, Buyer protection and secure payments
Content quality
excellent
Branding
consistent

Technology

Stack
React, JavaScript, AWS DNS, Adyen (payment encryption), Google Site Verification, Twitter Cards, Facebook Open Graph
Frameworks
React
Platforms
Web, iOS, Android
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Use of secure payment encryption (Adyen)
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Eloqua
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads, Adyen
Tracking pixels
Facebook Pixel, Twitter Pixel
Marketing tools
Eloqua (event-api.pub.prod-v6.rvb.ai)
Transparency
good

Site quality

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

Key observations

  1. Website is a professional e-commerce platform specialized in musical instruments.
  2. Strong brand presence and consistent user experience.
  3. Comprehensive privacy and cookie policies with GDPR compliance.
  4. No signs of malicious or suspicious content.
  5. Use of modern web technologies and secure payment processing.
  6. No explicit security policy or incident response contact publicly found.
  7. No vulnerability disclosure or security.txt detected.
Technical notes

Notes

The website is built on a modern technology stack featuring React for frontend rendering and AWS for hosting and DNS services. It uses advanced payment encryption via Adyen, ensuring secure transactions. The site is optimized for performance and mobile responsiveness, with proper meta tags for SEO and social media integration through Open Graph and Twitter Cards. Accessibility features are present but could be further enhanced. The use of multiple A/B testing and feature flagging frameworks indicates a mature development and deployment process. No CMS was detected, suggesting a custom-built platform tailored to the marketplace needs. Overall, the technical infrastructure supports a fast, secure, and user-friendly e-commerce experience with opportunities for continuous improvement in accessibility and DNS security.
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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