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Security report for whatnot.com

Whatnot · E-commerce · N/a

Low risk. 6 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

76/100

Risk levelLow

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

Whatnot operates as a live shopping marketplace specializing in collectibles and a wide range of product categories. The platform enables users to shop, sell, and connect through live auctions, targeting collectors and enthusiasts. The website demonstrates a modern technical infrastructure leveraging React, multiple analytics platforms, and advanced bot and fraud protection services. Privacy and cookie policies are comprehensive and include consent mechanisms, reflecting a mature approach to user data protection. Security posture is strong with HTTPS enforcement and security headers, though explicit security policies and incident response contacts are not publicly disclosed. The absence of WHOIS data limits domain registration trust verification but does not detract from the professional presentation and operational maturity of the site.

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

6 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 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

  3. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      SPF DNS Lookup Limit Exceeded

      SPF record requires 11 DNS lookups (max 10)

      What to do: Reduce includes and mechanisms to stay under limit

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

Keep watching whatnot.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.

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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
80
DNS health
85
Network security
100
GDPR outside view
58
Average
76

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

Whatnot positions itself in the niche e-commerce market focused on live auctions and collectibles. Its business model centers on facilitating transactions between sellers and buyers in a live interactive environment. The platform's use of extensive analytics and marketing tools indicates a data-driven approach to customer engagement and growth. While no direct contact emails or phone numbers are found, the presence of privacy and cookie policies, along with domain verification tags, supports credibility. The lack of WHOIS transparency is a notable gap but may be due to privacy protection services. Overall, Whatnot appears to be a medium-sized enterprise with a consistent brand and a clear market focus.

Security posture

The website employs HTTPS with strong SSL configuration and implements multiple security headers, indicating adherence to best practices. Bot mitigation and fraud prevention are handled via Kasada and Arkose Labs, enhancing protection against automated threats. Consent management is managed through Ironclad, supporting privacy compliance. However, the absence of a published security policy, incident response plan, or vulnerability disclosure program reduces transparency and may impact trust from security-conscious users. No vulnerabilities or exposed sensitive data were detected in the analysis. Enhancing public security documentation and providing direct security contact channels would improve the security posture further.

Recommendations

  1. Publish a dedicated security policy and incident response information page to improve transparency.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide direct security contact emails such as security@whatnot.com or abuse@whatnot.com for incident reporting.
  4. Regularly review and audit third-party scripts and analytics tools to mitigate potential vulnerabilities.
  5. Enhance data retention policy disclosures to align with GDPR and other privacy regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Whatnot
Description
Whatnot is a live shopping marketplace where users can shop, sell, and connect around collectibles and various categories including coins, sneakers, fashion, electronics, sports and Pokémon cards, plants, jewelry, and more.
Key services
Live auctions, Marketplace for collectibles, Seller and buyer connection
Content quality
good
Branding
consistent

Technology

Stack
React, Segment Analytics, Google Tag Manager, Facebook Pixel, TikTok Pixel, Stripe, Kasada (bot protection), Ironclad (consent management), Arkose Labs (fraud prevention)
Frameworks
React
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Bot protection via Kasada and Arkose Labs
  • Consent management with Ironclad
  • Use of security headers

Analytics and tracking

Services
Segment, Google Analytics, Facebook Analytics, TikTok Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Facebook Ads, TikTok Ads
Tracking pixels
Facebook Pixel, TikTok Pixel, Spotify Pixel
Marketing tools
Segment Analytics
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and interactive features.
  2. Strong use of modern web technologies and analytics tools.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. No direct company contact emails or phone numbers found in the HTML content.
  5. No explicit security or incident response contact information published.
  6. WHOIS data is missing or unavailable, limiting domain trust verification.
  7. No adult or NSFW content detected; suitable for general audiences.
Technical notes

Notes

The website is built on a modern React framework with integration of multiple analytics and marketing tools including Segment, Google Tag Manager, Facebook Pixel, and TikTok Pixel. It uses advanced bot and fraud protection services such as Kasada and Arkose Labs, indicating a focus on security and user experience. The site is well optimized for mobile devices and accessibility, with good SEO practices evident from meta tags and structured data. Performance is fast with preloading of critical scripts and fonts. No CMS or hosting provider details were explicitly identified. Overall, the technical implementation reflects a mature and well-maintained digital 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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